18866770

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{8537}}^1$

素因数の和:8574

約数の個数: 32

約数和(自身を含む): 38728368

約数和(自身を除く): 19861598

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 442, 1105, 2210, 8537, 17074, 42685, 85370, 110981, 145129, 221962, 290258, 554905, 725645, 1109810, 1451290, 1886677, 3773354, 9433385, 18866770]

約数ペア:

[(1, 18866770), (2, 9433385), (5, 3773354), (10, 1886677), (13, 1451290), (17, 1109810), (26, 725645), (34, 554905), (65, 290258), (85, 221962), (130, 145129), (170, 110981), (221, 85370), (442, 42685), (1105, 17074), (2210, 8537)]