404540

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{179}}^1$

素因数の和:301

約数の個数: 24

約数和(自身を含む): 861840

約数和(自身を除く): 457300

約数列:

[1, 2, 4, 5, 10, 20, 113, 179, 226, 358, 452, 565, 716, 895, 1130, 1790, 2260, 3580, 20227, 40454, 80908, 101135, 202270, 404540]

約数ペア:

[(1, 404540), (2, 202270), (4, 101135), (5, 80908), (10, 40454), (20, 20227), (113, 3580), (179, 2260), (226, 1790), (358, 1130), (452, 895), (565, 716)]