80653520

素因数分解:

$2^4\times 5^1\times {\mathrm{691}}^1\times {\mathrm{1459}}^1$

素因数の和:2163

約数の個数: 40

約数和(自身を含む): 187919520

約数和(自身を除く): 107266000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 691, 1382, 1459, 2764, 2918, 3455, 5528, 5836, 6910, 7295, 11056, 11672, 13820, 14590, 23344, 27640, 29180, 55280, 58360, 116720, 1008169, 2016338, 4032676, 5040845, 8065352, 10081690, 16130704, 20163380, 40326760, 80653520]

約数ペア:

[(1, 80653520), (2, 40326760), (4, 20163380), (5, 16130704), (8, 10081690), (10, 8065352), (16, 5040845), (20, 4032676), (40, 2016338), (80, 1008169), (691, 116720), (1382, 58360), (1459, 55280), (2764, 29180), (2918, 27640), (3455, 23344), (5528, 14590), (5836, 13820), (6910, 11672), (7295, 11056)]