81312660

素因数分解:

$2^2\times 3^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2$

素因数の和:67

約数の個数: 288

約数和(自身を含む): 302520960

約数和(自身を除く): 221208300

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 13, 15, 18, 20, 22, 26, 27, 30, 33, 36, 39, 44, 45, 52, 54, 55, 60, 65, 66, 78, 81, 90, 99, 108, 110, 117, 130, 132, 135, 143, 156, 162, 165, 169, 180, 195, 198, 220, 234, 243, 260, 270, 286, 297, 324, 330, 338, 351, 390, 396, 405, 429, 468, 486, 495, 507, 540, 572, 585, 594, 660, 676, 702, 715, 729, 780, 810, 845, 858, 891, 972, 990, 1014, 1053, 1170, 1188, 1215, 1287, 1404, 1430, 1458, 1485, 1521, 1620, 1690, 1716, 1755, 1782, 1859, 1980, 2028, 2106, 2145, 2187, 2340, 2430, 2535, 2574, 2673, 2860, 2916, 2970, 3042, 3159, 3380, 3510, 3564, 3645, 3718, 3861, 4212, 4290, 4374, 4455, 4563, 4860, 5070, 5148, 5265, 5346, 5577, 5940, 6084, 6318, 6435, 7020, 7290, 7436, 7605, 7722, 8019, 8580, 8748, 8910, 9126, 9295, 9477, 10140, 10530, 10692, 10935, 11154, 11583, 12636, 12870, 13365, 13689, 14580, 15210, 15444, 15795, 16038, 16731, 17820, 18252, 18590, 18954, 19305, 21060, 21870, 22308, 22815, 23166, 24057, 25740, 26730, 27378, 27885, 28431, 30420, 31590, 32076, 33462, 34749, 37180, 37908, 38610, 40095, 41067, 43740, 45630, 46332, 47385, 48114, 50193, 53460, 54756, 55770, 56862, 57915, 63180, 66924, 68445, 69498, 77220, 80190, 82134, 83655, 91260, 94770, 96228, 100386, 104247, 111540, 113724, 115830, 120285, 123201, 136890, 138996, 142155, 150579, 160380, 164268, 167310, 173745, 189540, 200772, 205335, 208494, 231660, 240570, 246402, 250965, 273780, 284310, 301158, 312741, 334620, 347490, 369603, 410670, 416988, 451737, 481140, 492804, 501930, 521235, 568620, 602316, 616005, 625482, 694980, 739206, 752895, 821340, 903474, 1003860, 1042470, 1232010, 1250964, 1355211, 1478412, 1505790, 1563705, 1806948, 1848015, 2084940, 2258685, 2464020, 2710422, 3011580, 3127410, 3696030, 4065633, 4517370, 5420844, 6254820, 6776055, 7392060, 8131266, 9034740, 13552110, 16262532, 20328165, 27104220, 40656330, 81312660]

約数ペア:

[(1, 81312660), (2, 40656330), (3, 27104220), (4, 20328165), (5, 16262532), (6, 13552110), (9, 9034740), (10, 8131266), (11, 7392060), (12, 6776055), (13, 6254820), (15, 5420844), (18, 4517370), (20, 4065633), (22, 3696030), (26, 3127410), (27, 3011580), (30, 2710422), (33, 2464020), (36, 2258685), (39, 2084940), (44, 1848015), (45, 1806948), (52, 1563705), (54, 1505790), (55, 1478412), (60, 1355211), (65, 1250964), (66, 1232010), (78, 1042470), (81, 1003860), (90, 903474), (99, 821340), (108, 752895), (110, 739206), (117, 694980), (130, 625482), (132, 616005), (135, 602316), (143, 568620), (156, 521235), (162, 501930), (165, 492804), (169, 481140), (180, 451737), (195, 416988), (198, 410670), (220, 369603), (234, 347490), (243, 334620), (260, 312741), (270, 301158), (286, 284310), (297, 273780), (324, 250965), (330, 246402), (338, 240570), (351, 231660), (390, 208494), (396, 205335), (405, 200772), (429, 189540), (468, 173745), (486, 167310), (495, 164268), (507, 160380), (540, 150579), (572, 142155), (585, 138996), (594, 136890), (660, 123201), (676, 120285), (702, 115830), (715, 113724), (729, 111540), (780, 104247), (810, 100386), (845, 96228), (858, 94770), (891, 91260), (972, 83655), (990, 82134), (1014, 80190), (1053, 77220), (1170, 69498), (1188, 68445), (1215, 66924), (1287, 63180), (1404, 57915), (1430, 56862), (1458, 55770), (1485, 54756), (1521, 53460), (1620, 50193), (1690, 48114), (1716, 47385), (1755, 46332), (1782, 45630), (1859, 43740), (1980, 41067), (2028, 40095), (2106, 38610), (2145, 37908), (2187, 37180), (2340, 34749), (2430, 33462), (2535, 32076), (2574, 31590), (2673, 30420), (2860, 28431), (2916, 27885), (2970, 27378), (3042, 26730), (3159, 25740), (3380, 24057), (3510, 23166), (3564, 22815), (3645, 22308), (3718, 21870), (3861, 21060), (4212, 19305), (4290, 18954), (4374, 18590), (4455, 18252), (4563, 17820), (4860, 16731), (5070, 16038), (5148, 15795), (5265, 15444), (5346, 15210), (5577, 14580), (5940, 13689), (6084, 13365), (6318, 12870), (6435, 12636), (7020, 11583), (7290, 11154), (7436, 10935), (7605, 10692), (7722, 10530), (8019, 10140), (8580, 9477), (8748, 9295), (8910, 9126)]