20902920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{373}}^1\times {\mathrm{467}}^1$

素因数の和:854

約数の個数: 64

約数和(自身を含む): 63011520

約数和(自身を除く): 42108600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 373, 467, 746, 934, 1119, 1401, 1492, 1865, 1868, 2238, 2335, 2802, 2984, 3730, 3736, 4476, 4670, 5595, 5604, 7005, 7460, 8952, 9340, 11190, 11208, 14010, 14920, 18680, 22380, 28020, 44760, 56040, 174191, 348382, 522573, 696764, 870955, 1045146, 1393528, 1741910, 2090292, 2612865, 3483820, 4180584, 5225730, 6967640, 10451460, 20902920]

約数ペア:

[(1, 20902920), (2, 10451460), (3, 6967640), (4, 5225730), (5, 4180584), (6, 3483820), (8, 2612865), (10, 2090292), (12, 1741910), (15, 1393528), (20, 1045146), (24, 870955), (30, 696764), (40, 522573), (60, 348382), (120, 174191), (373, 56040), (467, 44760), (746, 28020), (934, 22380), (1119, 18680), (1401, 14920), (1492, 14010), (1865, 11208), (1868, 11190), (2238, 9340), (2335, 8952), (2802, 7460), (2984, 7005), (3730, 5604), (3736, 5595), (4476, 4670)]