31456840

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{19181}}^1$

素因数の和:19233

約数の個数: 32

約数和(自身を含む): 72507960

約数和(自身を除く): 41051120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 19181, 38362, 76724, 95905, 153448, 191810, 383620, 767240, 786421, 1572842, 3145684, 3932105, 6291368, 7864210, 15728420, 31456840]

約数ペア:

[(1, 31456840), (2, 15728420), (4, 7864210), (5, 6291368), (8, 3932105), (10, 3145684), (20, 1572842), (40, 786421), (41, 767240), (82, 383620), (164, 191810), (205, 153448), (328, 95905), (410, 76724), (820, 38362), (1640, 19181)]