20381360

素因数分解:

$2^4\times 5^1\times {\mathrm{107}}^1\times {\mathrm{2381}}^1$

素因数の和:2501

約数の個数: 40

約数和(自身を含む): 47849616

約数和(自身を除く): 27468256

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 107, 214, 428, 535, 856, 1070, 1712, 2140, 2381, 4280, 4762, 8560, 9524, 11905, 19048, 23810, 38096, 47620, 95240, 190480, 254767, 509534, 1019068, 1273835, 2038136, 2547670, 4076272, 5095340, 10190680, 20381360]

約数ペア:

[(1, 20381360), (2, 10190680), (4, 5095340), (5, 4076272), (8, 2547670), (10, 2038136), (16, 1273835), (20, 1019068), (40, 509534), (80, 254767), (107, 190480), (214, 95240), (428, 47620), (535, 38096), (856, 23810), (1070, 19048), (1712, 11905), (2140, 9524), (2381, 8560), (4280, 4762)]