81589990

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{179}}^1\times {\mathrm{2399}}^1$

素因数の和:2604

約数の個数: 32

約数和(自身を含む): 155520000

約数和(自身を除く): 73930010

約数列:

[1, 2, 5, 10, 19, 38, 95, 179, 190, 358, 895, 1790, 2399, 3401, 4798, 6802, 11995, 17005, 23990, 34010, 45581, 91162, 227905, 429421, 455810, 858842, 2147105, 4294210, 8158999, 16317998, 40794995, 81589990]

約数ペア:

[(1, 81589990), (2, 40794995), (5, 16317998), (10, 8158999), (19, 4294210), (38, 2147105), (95, 858842), (179, 455810), (190, 429421), (358, 227905), (895, 91162), (1790, 45581), (2399, 34010), (3401, 23990), (4798, 17005), (6802, 11995)]