18970160

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{21557}}^1$

素因数の和:21581

約数の個数: 40

約数和(自身を含む): 48117456

約数和(自身を除く): 29147296

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 21557, 43114, 86228, 107785, 172456, 215570, 237127, 344912, 431140, 474254, 862280, 948508, 1185635, 1724560, 1897016, 2371270, 3794032, 4742540, 9485080, 18970160]

約数ペア:

[(1, 18970160), (2, 9485080), (4, 4742540), (5, 3794032), (8, 2371270), (10, 1897016), (11, 1724560), (16, 1185635), (20, 948508), (22, 862280), (40, 474254), (44, 431140), (55, 344912), (80, 237127), (88, 215570), (110, 172456), (176, 107785), (220, 86228), (440, 43114), (880, 21557)]