19879240

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{9377}}^1$

素因数の和:9441

約数の個数: 32

約数和(自身を含む): 45577080

約数和(自身を除く): 25697840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 9377, 18754, 37508, 46885, 75016, 93770, 187540, 375080, 496981, 993962, 1987924, 2484905, 3975848, 4969810, 9939620, 19879240]

約数ペア:

[(1, 19879240), (2, 9939620), (4, 4969810), (5, 3975848), (8, 2484905), (10, 1987924), (20, 993962), (40, 496981), (53, 375080), (106, 187540), (212, 93770), (265, 75016), (424, 46885), (530, 37508), (1060, 18754), (2120, 9377)]