69292780

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{197}}^1\times {\mathrm{409}}^1$

素因数の和:658

約数の個数: 48

約数和(自身を含む): 150020640

約数和(自身を除く): 80727860

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 197, 215, 394, 409, 430, 788, 818, 860, 985, 1636, 1970, 2045, 3940, 4090, 8180, 8471, 16942, 17587, 33884, 35174, 42355, 70348, 80573, 84710, 87935, 161146, 169420, 175870, 322292, 351740, 402865, 805730, 1611460, 3464639, 6929278, 13858556, 17323195, 34646390, 69292780]

約数ペア:

[(1, 69292780), (2, 34646390), (4, 17323195), (5, 13858556), (10, 6929278), (20, 3464639), (43, 1611460), (86, 805730), (172, 402865), (197, 351740), (215, 322292), (394, 175870), (409, 169420), (430, 161146), (788, 87935), (818, 84710), (860, 80573), (985, 70348), (1636, 42355), (1970, 35174), (2045, 33884), (3940, 17587), (4090, 16942), (8180, 8471)]