20657360

素因数分解:

$2^4\times 5^1\times {\mathrm{149}}^1\times {\mathrm{1733}}^1$

素因数の和:1895

約数の個数: 40

約数和(自身を含む): 48378600

約数和(自身を除く): 27721240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 149, 298, 596, 745, 1192, 1490, 1733, 2384, 2980, 3466, 5960, 6932, 8665, 11920, 13864, 17330, 27728, 34660, 69320, 138640, 258217, 516434, 1032868, 1291085, 2065736, 2582170, 4131472, 5164340, 10328680, 20657360]

約数ペア:

[(1, 20657360), (2, 10328680), (4, 5164340), (5, 4131472), (8, 2582170), (10, 2065736), (16, 1291085), (20, 1032868), (40, 516434), (80, 258217), (149, 138640), (298, 69320), (596, 34660), (745, 27728), (1192, 17330), (1490, 13864), (1733, 11920), (2384, 8665), (2980, 6932), (3466, 5960)]