20280280

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{17483}}^1$

素因数の和:17523

約数の個数: 32

約数和(自身を含む): 47206800

約数和(自身を除く): 26926520

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 17483, 34966, 69932, 87415, 139864, 174830, 349660, 507007, 699320, 1014014, 2028028, 2535035, 4056056, 5070070, 10140140, 20280280]

約数ペア:

[(1, 20280280), (2, 10140140), (4, 5070070), (5, 4056056), (8, 2535035), (10, 2028028), (20, 1014014), (29, 699320), (40, 507007), (58, 349660), (116, 174830), (145, 139864), (232, 87415), (290, 69932), (580, 34966), (1160, 17483)]