20537800

素因数分解:

$2^3\times 5^2\times {\mathrm{29}}^1\times {\mathrm{3541}}^1$

素因数の和:3586

約数の個数: 48

約数和(自身を含む): 49410900

約数和(自身を除く): 28873100

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 29, 40, 50, 58, 100, 116, 145, 200, 232, 290, 580, 725, 1160, 1450, 2900, 3541, 5800, 7082, 14164, 17705, 28328, 35410, 70820, 88525, 102689, 141640, 177050, 205378, 354100, 410756, 513445, 708200, 821512, 1026890, 2053780, 2567225, 4107560, 5134450, 10268900, 20537800]

約数ペア:

[(1, 20537800), (2, 10268900), (4, 5134450), (5, 4107560), (8, 2567225), (10, 2053780), (20, 1026890), (25, 821512), (29, 708200), (40, 513445), (50, 410756), (58, 354100), (100, 205378), (116, 177050), (145, 141640), (200, 102689), (232, 88525), (290, 70820), (580, 35410), (725, 28328), (1160, 17705), (1450, 14164), (2900, 7082), (3541, 5800)]