21198870

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1$

素因数の和:80

約数の個数: 288

約数和(自身を含む): 76826880

約数和(自身を除く): 55628010

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 11, 14, 15, 18, 19, 21, 22, 23, 30, 33, 35, 38, 42, 45, 46, 49, 55, 57, 63, 66, 69, 70, 77, 90, 95, 98, 99, 105, 110, 114, 115, 126, 133, 138, 147, 154, 161, 165, 171, 190, 198, 207, 209, 210, 230, 231, 245, 253, 266, 285, 294, 315, 322, 330, 342, 345, 385, 399, 414, 418, 437, 441, 462, 483, 490, 495, 506, 539, 570, 627, 630, 665, 690, 693, 735, 759, 770, 798, 805, 855, 874, 882, 931, 966, 990, 1035, 1045, 1078, 1127, 1155, 1197, 1254, 1265, 1311, 1330, 1386, 1449, 1463, 1470, 1518, 1610, 1617, 1710, 1771, 1862, 1881, 1995, 2070, 2090, 2185, 2205, 2254, 2277, 2310, 2394, 2415, 2530, 2622, 2695, 2793, 2898, 2926, 3059, 3135, 3234, 3381, 3465, 3542, 3762, 3795, 3933, 3990, 4370, 4389, 4410, 4554, 4655, 4807, 4830, 4851, 5313, 5390, 5586, 5635, 5985, 6118, 6270, 6555, 6762, 6930, 7245, 7315, 7590, 7866, 8085, 8379, 8778, 8855, 9177, 9310, 9405, 9614, 9702, 10143, 10241, 10626, 11270, 11385, 11970, 12397, 13110, 13167, 13965, 14421, 14490, 14630, 15295, 15939, 16170, 16758, 16905, 17710, 18354, 18810, 19665, 20286, 20482, 21413, 21945, 22770, 24035, 24255, 24794, 26334, 26565, 27531, 27930, 28842, 30590, 30723, 31878, 33649, 33810, 37191, 39330, 41895, 42826, 43263, 43890, 45885, 48070, 48510, 50715, 51205, 53130, 55062, 61446, 61985, 64239, 65835, 67298, 72105, 74382, 79695, 83790, 86526, 91770, 92169, 100947, 101430, 102410, 107065, 111573, 123970, 128478, 131670, 137655, 144210, 153615, 159390, 168245, 184338, 185955, 192717, 201894, 214130, 216315, 223146, 235543, 275310, 302841, 307230, 321195, 336490, 371910, 385434, 432630, 460845, 471086, 504735, 557865, 605682, 642390, 706629, 921690, 963585, 1009470, 1115730, 1177715, 1413258, 1514205, 1927170, 2119887, 2355430, 3028410, 3533145, 4239774, 7066290, 10599435, 21198870]

約数ペア:

[(1, 21198870), (2, 10599435), (3, 7066290), (5, 4239774), (6, 3533145), (7, 3028410), (9, 2355430), (10, 2119887), (11, 1927170), (14, 1514205), (15, 1413258), (18, 1177715), (19, 1115730), (21, 1009470), (22, 963585), (23, 921690), (30, 706629), (33, 642390), (35, 605682), (38, 557865), (42, 504735), (45, 471086), (46, 460845), (49, 432630), (55, 385434), (57, 371910), (63, 336490), (66, 321195), (69, 307230), (70, 302841), (77, 275310), (90, 235543), (95, 223146), (98, 216315), (99, 214130), (105, 201894), (110, 192717), (114, 185955), (115, 184338), (126, 168245), (133, 159390), (138, 153615), (147, 144210), (154, 137655), (161, 131670), (165, 128478), (171, 123970), (190, 111573), (198, 107065), (207, 102410), (209, 101430), (210, 100947), (230, 92169), (231, 91770), (245, 86526), (253, 83790), (266, 79695), (285, 74382), (294, 72105), (315, 67298), (322, 65835), (330, 64239), (342, 61985), (345, 61446), (385, 55062), (399, 53130), (414, 51205), (418, 50715), (437, 48510), (441, 48070), (462, 45885), (483, 43890), (490, 43263), (495, 42826), (506, 41895), (539, 39330), (570, 37191), (627, 33810), (630, 33649), (665, 31878), (690, 30723), (693, 30590), (735, 28842), (759, 27930), (770, 27531), (798, 26565), (805, 26334), (855, 24794), (874, 24255), (882, 24035), (931, 22770), (966, 21945), (990, 21413), (1035, 20482), (1045, 20286), (1078, 19665), (1127, 18810), (1155, 18354), (1197, 17710), (1254, 16905), (1265, 16758), (1311, 16170), (1330, 15939), (1386, 15295), (1449, 14630), (1463, 14490), (1470, 14421), (1518, 13965), (1610, 13167), (1617, 13110), (1710, 12397), (1771, 11970), (1862, 11385), (1881, 11270), (1995, 10626), (2070, 10241), (2090, 10143), (2185, 9702), (2205, 9614), (2254, 9405), (2277, 9310), (2310, 9177), (2394, 8855), (2415, 8778), (2530, 8379), (2622, 8085), (2695, 7866), (2793, 7590), (2898, 7315), (2926, 7245), (3059, 6930), (3135, 6762), (3234, 6555), (3381, 6270), (3465, 6118), (3542, 5985), (3762, 5635), (3795, 5586), (3933, 5390), (3990, 5313), (4370, 4851), (4389, 4830), (4410, 4807), (4554, 4655)]