15885020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{25621}}^1$

素因数の和:25661

約数の個数: 24

約数和(自身を含む): 34435968

約数和(自身を除く): 18550948

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 25621, 51242, 102484, 128105, 256210, 512420, 794251, 1588502, 3177004, 3971255, 7942510, 15885020]

約数ペア:

[(1, 15885020), (2, 7942510), (4, 3971255), (5, 3177004), (10, 1588502), (20, 794251), (31, 512420), (62, 256210), (124, 128105), (155, 102484), (310, 51242), (620, 25621)]