20490900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{167}}^1\times {\mathrm{409}}^1$

素因数の和:593

約数の個数: 72

約数和(自身を含む): 59787840

約数和(自身を除く): 39296940

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 150, 167, 300, 334, 409, 501, 668, 818, 835, 1002, 1227, 1636, 1670, 2004, 2045, 2454, 2505, 3340, 4090, 4175, 4908, 5010, 6135, 8180, 8350, 10020, 10225, 12270, 12525, 16700, 20450, 24540, 25050, 30675, 40900, 50100, 61350, 68303, 122700, 136606, 204909, 273212, 341515, 409818, 683030, 819636, 1024545, 1366060, 1707575, 2049090, 3415150, 4098180, 5122725, 6830300, 10245450, 20490900]

約数ペア:

[(1, 20490900), (2, 10245450), (3, 6830300), (4, 5122725), (5, 4098180), (6, 3415150), (10, 2049090), (12, 1707575), (15, 1366060), (20, 1024545), (25, 819636), (30, 683030), (50, 409818), (60, 341515), (75, 273212), (100, 204909), (150, 136606), (167, 122700), (300, 68303), (334, 61350), (409, 50100), (501, 40900), (668, 30675), (818, 25050), (835, 24540), (1002, 20450), (1227, 16700), (1636, 12525), (1670, 12270), (2004, 10225), (2045, 10020), (2454, 8350), (2505, 8180), (3340, 6135), (4090, 5010), (4175, 4908)]