20852450

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{197}}^1$

素因数の和:311

約数の個数: 48

約数和(自身を含む): 40879080

約数和(自身を除く): 20026630

約数列:

[1, 2, 5, 10, 25, 29, 50, 58, 73, 145, 146, 197, 290, 365, 394, 725, 730, 985, 1450, 1825, 1970, 2117, 3650, 4234, 4925, 5713, 9850, 10585, 11426, 14381, 21170, 28565, 28762, 52925, 57130, 71905, 105850, 142825, 143810, 285650, 359525, 417049, 719050, 834098, 2085245, 4170490, 10426225, 20852450]

約数ペア:

[(1, 20852450), (2, 10426225), (5, 4170490), (10, 2085245), (25, 834098), (29, 719050), (50, 417049), (58, 359525), (73, 285650), (145, 143810), (146, 142825), (197, 105850), (290, 71905), (365, 57130), (394, 52925), (725, 28762), (730, 28565), (985, 21170), (1450, 14381), (1825, 11426), (1970, 10585), (2117, 9850), (3650, 5713), (4234, 4925)]