8340980

素因数分解:

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

素因数の和:308

約数の個数: 48

約数和(自身を含む): 18461520

約数和(自身を除く): 10120540

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 73, 116, 145, 146, 197, 290, 292, 365, 394, 580, 730, 788, 985, 1460, 1970, 2117, 3940, 4234, 5713, 8468, 10585, 11426, 14381, 21170, 22852, 28565, 28762, 42340, 57130, 57524, 71905, 114260, 143810, 287620, 417049, 834098, 1668196, 2085245, 4170490, 8340980]

約数ペア:

[(1, 8340980), (2, 4170490), (4, 2085245), (5, 1668196), (10, 834098), (20, 417049), (29, 287620), (58, 143810), (73, 114260), (116, 71905), (145, 57524), (146, 57130), (197, 42340), (290, 28762), (292, 28565), (365, 22852), (394, 21170), (580, 14381), (730, 11426), (788, 10585), (985, 8468), (1460, 5713), (1970, 4234), (2117, 3940)]