18939400

素因数分解:

$2^3\times 5^2\times {\mathrm{281}}^1\times {\mathrm{337}}^1$

素因数の和:634

約数の個数: 48

約数和(自身を含む): 44321940

約数和(自身を除く): 25382540

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 281, 337, 562, 674, 1124, 1348, 1405, 1685, 2248, 2696, 2810, 3370, 5620, 6740, 7025, 8425, 11240, 13480, 14050, 16850, 28100, 33700, 56200, 67400, 94697, 189394, 378788, 473485, 757576, 946970, 1893940, 2367425, 3787880, 4734850, 9469700, 18939400]

約数ペア:

[(1, 18939400), (2, 9469700), (4, 4734850), (5, 3787880), (8, 2367425), (10, 1893940), (20, 946970), (25, 757576), (40, 473485), (50, 378788), (100, 189394), (200, 94697), (281, 67400), (337, 56200), (562, 33700), (674, 28100), (1124, 16850), (1348, 14050), (1405, 13480), (1685, 11240), (2248, 8425), (2696, 7025), (2810, 6740), (3370, 5620)]