128528525

素因数分解:

$5^2\times {\mathrm{61}}^1\times {\mathrm{271}}^1\times {\mathrm{311}}^1$

素因数の和:653

約数の個数: 24

約数和(自身を含む): 163108608

約数和(自身を除く): 34580083

約数列:

[1, 5, 25, 61, 271, 305, 311, 1355, 1525, 1555, 6775, 7775, 16531, 18971, 82655, 84281, 94855, 413275, 421405, 474275, 2107025, 5141141, 25705705, 128528525]

約数ペア:

[(1, 128528525), (5, 25705705), (25, 5141141), (61, 2107025), (271, 474275), (305, 421405), (311, 413275), (1355, 94855), (1525, 84281), (1555, 82655), (6775, 18971), (7775, 16531)]