20252890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{53}}^2\times {\mathrm{103}}^1$

素因数の和:223

約数の個数: 48

約数和(自身を含む): 42876288

約数和(自身を除く): 22623398

約数列:

[1, 2, 5, 7, 10, 14, 35, 53, 70, 103, 106, 206, 265, 371, 515, 530, 721, 742, 1030, 1442, 1855, 2809, 3605, 3710, 5459, 5618, 7210, 10918, 14045, 19663, 27295, 28090, 38213, 39326, 54590, 76426, 98315, 191065, 196630, 289327, 382130, 578654, 1446635, 2025289, 2893270, 4050578, 10126445, 20252890]

約数ペア:

[(1, 20252890), (2, 10126445), (5, 4050578), (7, 2893270), (10, 2025289), (14, 1446635), (35, 578654), (53, 382130), (70, 289327), (103, 196630), (106, 191065), (206, 98315), (265, 76426), (371, 54590), (515, 39326), (530, 38213), (721, 28090), (742, 27295), (1030, 19663), (1442, 14045), (1855, 10918), (2809, 7210), (3605, 5618), (3710, 5459)]