123964220

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{197}}^1\times {\mathrm{431}}^1$

素因数の和:710

約数の個数: 48

約数和(自身を含む): 265845888

約数和(自身を除く): 141881668

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 197, 292, 365, 394, 431, 730, 788, 862, 985, 1460, 1724, 1970, 2155, 3940, 4310, 8620, 14381, 28762, 31463, 57524, 62926, 71905, 84907, 125852, 143810, 157315, 169814, 287620, 314630, 339628, 424535, 629260, 849070, 1698140, 6198211, 12396422, 24792844, 30991055, 61982110, 123964220]

約数ペア:

[(1, 123964220), (2, 61982110), (4, 30991055), (5, 24792844), (10, 12396422), (20, 6198211), (73, 1698140), (146, 849070), (197, 629260), (292, 424535), (365, 339628), (394, 314630), (431, 287620), (730, 169814), (788, 157315), (862, 143810), (985, 125852), (1460, 84907), (1724, 71905), (1970, 62926), (2155, 57524), (3940, 31463), (4310, 28762), (8620, 14381)]