20928860

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{25523}}^1$

素因数の和:25573

約数の個数: 24

約数和(自身を含む): 45024336

約数和(自身を除く): 24095476

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 25523, 51046, 102092, 127615, 255230, 510460, 1046443, 2092886, 4185772, 5232215, 10464430, 20928860]

約数ペア:

[(1, 20928860), (2, 10464430), (4, 5232215), (5, 4185772), (10, 2092886), (20, 1046443), (41, 510460), (82, 255230), (164, 127615), (205, 102092), (410, 51046), (820, 25523)]