265331480

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{213977}}^1$

素因数の和:214019

約数の個数: 32

約数和(自身を含む): 616256640

約数和(自身を除く): 350925160

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 213977, 427954, 855908, 1069885, 1711816, 2139770, 4279540, 6633287, 8559080, 13266574, 26533148, 33166435, 53066296, 66332870, 132665740, 265331480]

約数ペア:

[(1, 265331480), (2, 132665740), (4, 66332870), (5, 53066296), (8, 33166435), (10, 26533148), (20, 13266574), (31, 8559080), (40, 6633287), (62, 4279540), (124, 2139770), (155, 1711816), (248, 1069885), (310, 855908), (620, 427954), (1240, 213977)]