31243640

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{19051}}^1$

素因数の和:19103

約数の個数: 32

約数和(自身を含む): 72016560

約数和(自身を除く): 40772920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 19051, 38102, 76204, 95255, 152408, 190510, 381020, 762040, 781091, 1562182, 3124364, 3905455, 6248728, 7810910, 15621820, 31243640]

約数ペア:

[(1, 31243640), (2, 15621820), (4, 7810910), (5, 6248728), (8, 3905455), (10, 3124364), (20, 1562182), (40, 781091), (41, 762040), (82, 381020), (164, 190510), (205, 152408), (328, 95255), (410, 76204), (820, 38102), (1640, 19051)]