18013820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{2213}}^1$

素因数の和:2270

約数の個数: 48

約数和(自身を含む): 42402528

約数和(自身を除く): 24388708

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 55, 74, 110, 148, 185, 220, 370, 407, 740, 814, 1628, 2035, 2213, 4070, 4426, 8140, 8852, 11065, 22130, 24343, 44260, 48686, 81881, 97372, 121715, 163762, 243430, 327524, 409405, 486860, 818810, 900691, 1637620, 1801382, 3602764, 4503455, 9006910, 18013820]

約数ペア:

[(1, 18013820), (2, 9006910), (4, 4503455), (5, 3602764), (10, 1801382), (11, 1637620), (20, 900691), (22, 818810), (37, 486860), (44, 409405), (55, 327524), (74, 243430), (110, 163762), (148, 121715), (185, 97372), (220, 81881), (370, 48686), (407, 44260), (740, 24343), (814, 22130), (1628, 11065), (2035, 8852), (2213, 8140), (4070, 4426)]