1381640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2657}}^1$

素因数の和:2681

約数の個数: 32

約数和(自身を含む): 3349080

約数和(自身を除く): 1967440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 2657, 5314, 10628, 13285, 21256, 26570, 34541, 53140, 69082, 106280, 138164, 172705, 276328, 345410, 690820, 1381640]

約数ペア:

[(1, 1381640), (2, 690820), (4, 345410), (5, 276328), (8, 172705), (10, 138164), (13, 106280), (20, 69082), (26, 53140), (40, 34541), (52, 26570), (65, 21256), (104, 13285), (130, 10628), (260, 5314), (520, 2657)]