217919140

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{69401}}^1$

素因数の和:69567

約数の個数: 24

約数和(自身を含む): 460551672

約数和(自身を除く): 242632532

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 69401, 138802, 277604, 347005, 694010, 1388020, 10895957, 21791914, 43583828, 54479785, 108959570, 217919140]

約数ペア:

[(1, 217919140), (2, 108959570), (4, 54479785), (5, 43583828), (10, 21791914), (20, 10895957), (157, 1388020), (314, 694010), (628, 347005), (785, 277604), (1570, 138802), (3140, 69401)]