20621950

素因数分解:

$2^1\times 5^2\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:277

約数の個数: 48

約数和(自身を含む): 40202784

約数和(自身を除く): 19580834

約数列:

[1, 2, 5, 10, 25, 37, 50, 71, 74, 142, 157, 185, 314, 355, 370, 710, 785, 925, 1570, 1775, 1850, 2627, 3550, 3925, 5254, 5809, 7850, 11147, 11618, 13135, 22294, 26270, 29045, 55735, 58090, 65675, 111470, 131350, 145225, 278675, 290450, 412439, 557350, 824878, 2062195, 4124390, 10310975, 20621950]

約数ペア:

[(1, 20621950), (2, 10310975), (5, 4124390), (10, 2062195), (25, 824878), (37, 557350), (50, 412439), (71, 290450), (74, 278675), (142, 145225), (157, 131350), (185, 111470), (314, 65675), (355, 58090), (370, 55735), (710, 29045), (785, 26270), (925, 22294), (1570, 13135), (1775, 11618), (1850, 11147), (2627, 7850), (3550, 5809), (3925, 5254)]