289119620

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{163}}^1\times {\mathrm{677}}^1$

素因数の和:980

約数の個数: 48

約数和(自身を含む): 616448448

約数和(自身を除く): 327328828

約数列:

[1, 2, 4, 5, 10, 20, 131, 163, 262, 326, 524, 652, 655, 677, 815, 1310, 1354, 1630, 2620, 2708, 3260, 3385, 6770, 13540, 21353, 42706, 85412, 88687, 106765, 110351, 177374, 213530, 220702, 354748, 427060, 441404, 443435, 551755, 886870, 1103510, 1773740, 2207020, 14455981, 28911962, 57823924, 72279905, 144559810, 289119620]

約数ペア:

[(1, 289119620), (2, 144559810), (4, 72279905), (5, 57823924), (10, 28911962), (20, 14455981), (131, 2207020), (163, 1773740), (262, 1103510), (326, 886870), (524, 551755), (652, 443435), (655, 441404), (677, 427060), (815, 354748), (1310, 220702), (1354, 213530), (1630, 177374), (2620, 110351), (2708, 106765), (3260, 88687), (3385, 85412), (6770, 42706), (13540, 21353)]