81643040

素因数分解:

$2^5\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3671}}^1$

素因数の和:3825

約数の個数: 48

約数和(自身を含む): 194322240

約数和(自身を除く): 112679200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 139, 160, 278, 556, 695, 1112, 1390, 2224, 2780, 3671, 4448, 5560, 7342, 11120, 14684, 18355, 22240, 29368, 36710, 58736, 73420, 117472, 146840, 293680, 510269, 587360, 1020538, 2041076, 2551345, 4082152, 5102690, 8164304, 10205380, 16328608, 20410760, 40821520, 81643040]

約数ペア:

[(1, 81643040), (2, 40821520), (4, 20410760), (5, 16328608), (8, 10205380), (10, 8164304), (16, 5102690), (20, 4082152), (32, 2551345), (40, 2041076), (80, 1020538), (139, 587360), (160, 510269), (278, 293680), (556, 146840), (695, 117472), (1112, 73420), (1390, 58736), (2224, 36710), (2780, 29368), (3671, 22240), (4448, 18355), (5560, 14684), (7342, 11120)]