81221580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1$

素因数の和:189

約数の個数: 288

約数和(自身を含む): 301916160

約数和(自身を除く): 220694580

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 17, 18, 19, 20, 22, 30, 33, 34, 36, 38, 44, 45, 51, 55, 57, 60, 66, 68, 76, 85, 90, 95, 99, 102, 110, 114, 127, 132, 153, 165, 170, 171, 180, 187, 190, 198, 204, 209, 220, 228, 254, 255, 285, 306, 323, 330, 340, 342, 374, 380, 381, 396, 418, 495, 508, 510, 561, 570, 612, 627, 635, 646, 660, 684, 748, 762, 765, 836, 855, 935, 969, 990, 1020, 1045, 1122, 1140, 1143, 1254, 1270, 1292, 1397, 1524, 1530, 1615, 1683, 1710, 1870, 1881, 1905, 1938, 1980, 2090, 2159, 2244, 2286, 2413, 2508, 2540, 2794, 2805, 2907, 3060, 3135, 3230, 3366, 3420, 3553, 3740, 3762, 3810, 3876, 4180, 4191, 4318, 4572, 4826, 4845, 5588, 5610, 5715, 5814, 6270, 6460, 6477, 6732, 6985, 7106, 7239, 7524, 7620, 8382, 8415, 8636, 9405, 9652, 9690, 10659, 10795, 11220, 11430, 11628, 12065, 12540, 12573, 12954, 13970, 14212, 14478, 14535, 16764, 16830, 17765, 18810, 19380, 19431, 20955, 21318, 21590, 21717, 22860, 23749, 24130, 25146, 25908, 26543, 27940, 28956, 29070, 31977, 32385, 33660, 35530, 36195, 37620, 38862, 41021, 41910, 42636, 43180, 43434, 47498, 48260, 50292, 53086, 53295, 58140, 62865, 63954, 64770, 71060, 71247, 72390, 77724, 79629, 82042, 83820, 86868, 94996, 97155, 106172, 106590, 108585, 118745, 123063, 125730, 127908, 129540, 132715, 142494, 144780, 159258, 159885, 164084, 194310, 205105, 213180, 213741, 217170, 237490, 238887, 246126, 251460, 265430, 284988, 318516, 319770, 356235, 369189, 388620, 398145, 410210, 427482, 434340, 451231, 474980, 477774, 492252, 530860, 615315, 639540, 712470, 738378, 796290, 820420, 854964, 902462, 955548, 1068705, 1194435, 1230630, 1353693, 1424940, 1476756, 1592580, 1804924, 1845945, 2137410, 2256155, 2388870, 2461260, 2707386, 3691890, 4061079, 4274820, 4512310, 4777740, 5414772, 6768465, 7383780, 8122158, 9024620, 13536930, 16244316, 20305395, 27073860, 40610790, 81221580]

約数ペア:

[(1, 81221580), (2, 40610790), (3, 27073860), (4, 20305395), (5, 16244316), (6, 13536930), (9, 9024620), (10, 8122158), (11, 7383780), (12, 6768465), (15, 5414772), (17, 4777740), (18, 4512310), (19, 4274820), (20, 4061079), (22, 3691890), (30, 2707386), (33, 2461260), (34, 2388870), (36, 2256155), (38, 2137410), (44, 1845945), (45, 1804924), (51, 1592580), (55, 1476756), (57, 1424940), (60, 1353693), (66, 1230630), (68, 1194435), (76, 1068705), (85, 955548), (90, 902462), (95, 854964), (99, 820420), (102, 796290), (110, 738378), (114, 712470), (127, 639540), (132, 615315), (153, 530860), (165, 492252), (170, 477774), (171, 474980), (180, 451231), (187, 434340), (190, 427482), (198, 410210), (204, 398145), (209, 388620), (220, 369189), (228, 356235), (254, 319770), (255, 318516), (285, 284988), (306, 265430), (323, 251460), (330, 246126), (340, 238887), (342, 237490), (374, 217170), (380, 213741), (381, 213180), (396, 205105), (418, 194310), (495, 164084), (508, 159885), (510, 159258), (561, 144780), (570, 142494), (612, 132715), (627, 129540), (635, 127908), (646, 125730), (660, 123063), (684, 118745), (748, 108585), (762, 106590), (765, 106172), (836, 97155), (855, 94996), (935, 86868), (969, 83820), (990, 82042), (1020, 79629), (1045, 77724), (1122, 72390), (1140, 71247), (1143, 71060), (1254, 64770), (1270, 63954), (1292, 62865), (1397, 58140), (1524, 53295), (1530, 53086), (1615, 50292), (1683, 48260), (1710, 47498), (1870, 43434), (1881, 43180), (1905, 42636), (1938, 41910), (1980, 41021), (2090, 38862), (2159, 37620), (2244, 36195), (2286, 35530), (2413, 33660), (2508, 32385), (2540, 31977), (2794, 29070), (2805, 28956), (2907, 27940), (3060, 26543), (3135, 25908), (3230, 25146), (3366, 24130), (3420, 23749), (3553, 22860), (3740, 21717), (3762, 21590), (3810, 21318), (3876, 20955), (4180, 19431), (4191, 19380), (4318, 18810), (4572, 17765), (4826, 16830), (4845, 16764), (5588, 14535), (5610, 14478), (5715, 14212), (5814, 13970), (6270, 12954), (6460, 12573), (6477, 12540), (6732, 12065), (6985, 11628), (7106, 11430), (7239, 11220), (7524, 10795), (7620, 10659), (8382, 9690), (8415, 9652), (8636, 9405)]