81639140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{371087}}^1$

素因数の和:371107

約数の個数: 24

約数和(自身を含む): 187028352

約数和(自身を除く): 105389212

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 371087, 742174, 1484348, 1855435, 3710870, 4081957, 7421740, 8163914, 16327828, 20409785, 40819570, 81639140]

約数ペア:

[(1, 81639140), (2, 40819570), (4, 20409785), (5, 16327828), (10, 8163914), (11, 7421740), (20, 4081957), (22, 3710870), (44, 1855435), (55, 1484348), (110, 742174), (220, 371087)]