129212680

素因数分解:

$2^3\times 5^1\times {\mathrm{1721}}^1\times {\mathrm{1877}}^1$

素因数の和:3609

約数の個数: 32

約数和(自身を含む): 291052440

約数和(自身を除く): 161839760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1721, 1877, 3442, 3754, 6884, 7508, 8605, 9385, 13768, 15016, 17210, 18770, 34420, 37540, 68840, 75080, 3230317, 6460634, 12921268, 16151585, 25842536, 32303170, 64606340, 129212680]

約数ペア:

[(1, 129212680), (2, 64606340), (4, 32303170), (5, 25842536), (8, 16151585), (10, 12921268), (20, 6460634), (40, 3230317), (1721, 75080), (1877, 68840), (3442, 37540), (3754, 34420), (6884, 18770), (7508, 17210), (8605, 15016), (9385, 13768)]