21664600

素因数分解:

$2^3\times 5^2\times {\mathrm{149}}^1\times {\mathrm{727}}^1$

素因数の和:892

約数の個数: 48

約数和(自身を含む): 50778000

約数和(自身を除く): 29113400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 149, 200, 298, 596, 727, 745, 1192, 1454, 1490, 2908, 2980, 3635, 3725, 5816, 5960, 7270, 7450, 14540, 14900, 18175, 29080, 29800, 36350, 72700, 108323, 145400, 216646, 433292, 541615, 866584, 1083230, 2166460, 2708075, 4332920, 5416150, 10832300, 21664600]

約数ペア:

[(1, 21664600), (2, 10832300), (4, 5416150), (5, 4332920), (8, 2708075), (10, 2166460), (20, 1083230), (25, 866584), (40, 541615), (50, 433292), (100, 216646), (149, 145400), (200, 108323), (298, 72700), (596, 36350), (727, 29800), (745, 29080), (1192, 18175), (1454, 14900), (1490, 14540), (2908, 7450), (2980, 7270), (3635, 5960), (3725, 5816)]