81213240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{15739}}^1$

素因数の和:15796

約数の個数: 64

約数和(自身を含む): 249321600

約数和(自身を除く): 168108360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 43, 60, 86, 120, 129, 172, 215, 258, 344, 430, 516, 645, 860, 1032, 1290, 1720, 2580, 5160, 15739, 31478, 47217, 62956, 78695, 94434, 125912, 157390, 188868, 236085, 314780, 377736, 472170, 629560, 676777, 944340, 1353554, 1888680, 2030331, 2707108, 3383885, 4060662, 5414216, 6767770, 8121324, 10151655, 13535540, 16242648, 20303310, 27071080, 40606620, 81213240]

約数ペア:

[(1, 81213240), (2, 40606620), (3, 27071080), (4, 20303310), (5, 16242648), (6, 13535540), (8, 10151655), (10, 8121324), (12, 6767770), (15, 5414216), (20, 4060662), (24, 3383885), (30, 2707108), (40, 2030331), (43, 1888680), (60, 1353554), (86, 944340), (120, 676777), (129, 629560), (172, 472170), (215, 377736), (258, 314780), (344, 236085), (430, 188868), (516, 157390), (645, 125912), (860, 94434), (1032, 78695), (1290, 62956), (1720, 47217), (2580, 31478), (5160, 15739)]