66759620

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{54721}}^1$

素因数の和:54791

約数の個数: 24

約数和(自身を含む): 142496088

約数和(自身を除く): 75736468

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 54721, 109442, 218884, 273605, 547210, 1094420, 3337981, 6675962, 13351924, 16689905, 33379810, 66759620]

約数ペア:

[(1, 66759620), (2, 33379810), (4, 16689905), (5, 13351924), (10, 6675962), (20, 3337981), (61, 1094420), (122, 547210), (244, 273605), (305, 218884), (610, 109442), (1220, 54721)]