18642640

素因数分解:

$2^4\times 5^1\times {\mathrm{467}}^1\times {\mathrm{499}}^1$

素因数の和:979

約数の個数: 40

約数和(自身を含む): 43524000

約数和(自身を除く): 24881360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 467, 499, 934, 998, 1868, 1996, 2335, 2495, 3736, 3992, 4670, 4990, 7472, 7984, 9340, 9980, 18680, 19960, 37360, 39920, 233033, 466066, 932132, 1165165, 1864264, 2330330, 3728528, 4660660, 9321320, 18642640]

約数ペア:

[(1, 18642640), (2, 9321320), (4, 4660660), (5, 3728528), (8, 2330330), (10, 1864264), (16, 1165165), (20, 932132), (40, 466066), (80, 233033), (467, 39920), (499, 37360), (934, 19960), (998, 18680), (1868, 9980), (1996, 9340), (2335, 7984), (2495, 7472), (3736, 4990), (3992, 4670)]