389688920

素因数分解:

$2^3\times 5^1\times {\mathrm{1033}}^1\times {\mathrm{9431}}^1$

素因数の和:10475

約数の個数: 32

約数和(自身を含む): 877741920

約数和(自身を除く): 488053000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1033, 2066, 4132, 5165, 8264, 9431, 10330, 18862, 20660, 37724, 41320, 47155, 75448, 94310, 188620, 377240, 9742223, 19484446, 38968892, 48711115, 77937784, 97422230, 194844460, 389688920]

約数ペア:

[(1, 389688920), (2, 194844460), (4, 97422230), (5, 77937784), (8, 48711115), (10, 38968892), (20, 19484446), (40, 9742223), (1033, 377240), (2066, 188620), (4132, 94310), (5165, 75448), (8264, 47155), (9431, 41320), (10330, 37724), (18862, 20660)]