161619740

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{260677}}^1$

素因数の和:260717

約数の個数: 24

約数和(自身を含む): 350351232

約数和(自身を除く): 188731492

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 260677, 521354, 1042708, 1303385, 2606770, 5213540, 8080987, 16161974, 32323948, 40404935, 80809870, 161619740]

約数ペア:

[(1, 161619740), (2, 80809870), (4, 40404935), (5, 32323948), (10, 16161974), (20, 8080987), (31, 5213540), (62, 2606770), (124, 1303385), (155, 1042708), (310, 521354), (620, 260677)]