81915540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1$

素因数の和:198

約数の個数: 192

約数和(自身を含む): 276369408

約数和(自身を除く): 194453868

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 41, 42, 60, 67, 70, 71, 82, 84, 105, 123, 134, 140, 142, 164, 201, 205, 210, 213, 246, 268, 284, 287, 335, 355, 402, 410, 420, 426, 469, 492, 497, 574, 615, 670, 710, 804, 820, 852, 861, 938, 994, 1005, 1065, 1148, 1230, 1340, 1407, 1420, 1435, 1491, 1722, 1876, 1988, 2010, 2130, 2345, 2460, 2485, 2747, 2814, 2870, 2911, 2982, 3444, 4020, 4260, 4305, 4690, 4757, 4970, 5494, 5628, 5740, 5822, 5964, 7035, 7455, 8241, 8610, 8733, 9380, 9514, 9940, 10988, 11644, 13735, 14070, 14271, 14555, 14910, 16482, 17220, 17466, 19028, 19229, 20377, 23785, 27470, 28140, 28542, 29110, 29820, 32964, 33299, 34932, 38458, 40754, 41205, 43665, 47570, 54940, 57084, 57687, 58220, 61131, 66598, 71355, 76916, 81508, 82410, 87330, 95140, 96145, 99897, 101885, 115374, 122262, 133196, 142710, 164820, 166495, 174660, 192290, 195037, 199794, 203770, 230748, 244524, 285420, 288435, 305655, 332990, 384580, 390074, 399588, 407540, 499485, 576870, 585111, 611310, 665980, 780148, 975185, 998970, 1153740, 1170222, 1222620, 1365259, 1950370, 1997940, 2340444, 2730518, 2925555, 3900740, 4095777, 5461036, 5851110, 6826295, 8191554, 11702220, 13652590, 16383108, 20478885, 27305180, 40957770, 81915540]

約数ペア:

[(1, 81915540), (2, 40957770), (3, 27305180), (4, 20478885), (5, 16383108), (6, 13652590), (7, 11702220), (10, 8191554), (12, 6826295), (14, 5851110), (15, 5461036), (20, 4095777), (21, 3900740), (28, 2925555), (30, 2730518), (35, 2340444), (41, 1997940), (42, 1950370), (60, 1365259), (67, 1222620), (70, 1170222), (71, 1153740), (82, 998970), (84, 975185), (105, 780148), (123, 665980), (134, 611310), (140, 585111), (142, 576870), (164, 499485), (201, 407540), (205, 399588), (210, 390074), (213, 384580), (246, 332990), (268, 305655), (284, 288435), (287, 285420), (335, 244524), (355, 230748), (402, 203770), (410, 199794), (420, 195037), (426, 192290), (469, 174660), (492, 166495), (497, 164820), (574, 142710), (615, 133196), (670, 122262), (710, 115374), (804, 101885), (820, 99897), (852, 96145), (861, 95140), (938, 87330), (994, 82410), (1005, 81508), (1065, 76916), (1148, 71355), (1230, 66598), (1340, 61131), (1407, 58220), (1420, 57687), (1435, 57084), (1491, 54940), (1722, 47570), (1876, 43665), (1988, 41205), (2010, 40754), (2130, 38458), (2345, 34932), (2460, 33299), (2485, 32964), (2747, 29820), (2814, 29110), (2870, 28542), (2911, 28140), (2982, 27470), (3444, 23785), (4020, 20377), (4260, 19229), (4305, 19028), (4690, 17466), (4757, 17220), (4970, 16482), (5494, 14910), (5628, 14555), (5740, 14271), (5822, 14070), (5964, 13735), (7035, 11644), (7455, 10988), (8241, 9940), (8610, 9514), (8733, 9380)]