990416205

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{511843}}^1$

素因数の和:511897

約数の個数: 24

約数和(自身を含む): 1756648608

約数和(自身を除く): 766232403

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 387, 645, 1935, 511843, 1535529, 2559215, 4606587, 7677645, 22009249, 23032935, 66027747, 110046245, 198083241, 330138735, 990416205]

約数ペア:

[(1, 990416205), (3, 330138735), (5, 198083241), (9, 110046245), (15, 66027747), (43, 23032935), (45, 22009249), (129, 7677645), (215, 4606587), (387, 2559215), (645, 1535529), (1935, 511843)]