20011550

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1811}}^1$

素因数の和:1853

約数の個数: 48

約数和(自身を含む): 42466032

約数和(自身を除く): 22454482

約数列:

[1, 2, 5, 10, 13, 17, 25, 26, 34, 50, 65, 85, 130, 170, 221, 325, 425, 442, 650, 850, 1105, 1811, 2210, 3622, 5525, 9055, 11050, 18110, 23543, 30787, 45275, 47086, 61574, 90550, 117715, 153935, 235430, 307870, 400231, 588575, 769675, 800462, 1177150, 1539350, 2001155, 4002310, 10005775, 20011550]

約数ペア:

[(1, 20011550), (2, 10005775), (5, 4002310), (10, 2001155), (13, 1539350), (17, 1177150), (25, 800462), (26, 769675), (34, 588575), (50, 400231), (65, 307870), (85, 235430), (130, 153935), (170, 117715), (221, 90550), (325, 61574), (425, 47086), (442, 45275), (650, 30787), (850, 23543), (1105, 18110), (1811, 11050), (2210, 9055), (3622, 5525)]