18517640

素因数分解:

$2^3\times 5^1\times {\mathrm{457}}^1\times {\mathrm{1013}}^1$

素因数の和:1481

約数の個数: 32

約数和(自身を含む): 41797080

約数和(自身を除く): 23279440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 457, 914, 1013, 1828, 2026, 2285, 3656, 4052, 4570, 5065, 8104, 9140, 10130, 18280, 20260, 40520, 462941, 925882, 1851764, 2314705, 3703528, 4629410, 9258820, 18517640]

約数ペア:

[(1, 18517640), (2, 9258820), (4, 4629410), (5, 3703528), (8, 2314705), (10, 1851764), (20, 925882), (40, 462941), (457, 40520), (914, 20260), (1013, 18280), (1828, 10130), (2026, 9140), (2285, 8104), (3656, 5065), (4052, 4570)]