78850820

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{277}}^1\times {\mathrm{331}}^1$

素因数の和:660

約数の個数: 48

約数和(自身を含む): 170563008

約数和(自身を除く): 91712188

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 277, 331, 430, 554, 662, 860, 1108, 1324, 1385, 1655, 2770, 3310, 5540, 6620, 11911, 14233, 23822, 28466, 47644, 56932, 59555, 71165, 91687, 119110, 142330, 183374, 238220, 284660, 366748, 458435, 916870, 1833740, 3942541, 7885082, 15770164, 19712705, 39425410, 78850820]

約数ペア:

[(1, 78850820), (2, 39425410), (4, 19712705), (5, 15770164), (10, 7885082), (20, 3942541), (43, 1833740), (86, 916870), (172, 458435), (215, 366748), (277, 284660), (331, 238220), (430, 183374), (554, 142330), (662, 119110), (860, 91687), (1108, 71165), (1324, 59555), (1385, 56932), (1655, 47644), (2770, 28466), (3310, 23822), (5540, 14233), (6620, 11911)]