390980

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{173}}^1$

素因数の和:295

約数の個数: 24

約数和(自身を含む): 833112

約数和(自身を除く): 442132

約数列:

[1, 2, 4, 5, 10, 20, 113, 173, 226, 346, 452, 565, 692, 865, 1130, 1730, 2260, 3460, 19549, 39098, 78196, 97745, 195490, 390980]

約数ペア:

[(1, 390980), (2, 195490), (4, 97745), (5, 78196), (10, 39098), (20, 19549), (113, 3460), (173, 2260), (226, 1730), (346, 1130), (452, 865), (565, 692)]