404060

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{227}}^1$

素因数の和:325

約数の個数: 24

約数和(自身を含む): 861840

約数和(自身を除く): 457780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 227, 356, 445, 454, 890, 908, 1135, 1780, 2270, 4540, 20203, 40406, 80812, 101015, 202030, 404060]

約数ペア:

[(1, 404060), (2, 202030), (4, 101015), (5, 80812), (10, 40406), (20, 20203), (89, 4540), (178, 2270), (227, 1780), (356, 1135), (445, 908), (454, 890)]