13257080

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{2111}}^1$

素因数の和:2279

約数の個数: 32

約数和(自身を含む): 30032640

約数和(自身を除く): 16775560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 2111, 3140, 4222, 6280, 8444, 10555, 16888, 21110, 42220, 84440, 331427, 662854, 1325708, 1657135, 2651416, 3314270, 6628540, 13257080]

約数ペア:

[(1, 13257080), (2, 6628540), (4, 3314270), (5, 2651416), (8, 1657135), (10, 1325708), (20, 662854), (40, 331427), (157, 84440), (314, 42220), (628, 21110), (785, 16888), (1256, 10555), (1570, 8444), (2111, 6280), (3140, 4222)]