123789940

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{1637}}^1$

素因数の和:1864

約数の個数: 48

約数和(自身を含む): 275184000

約数和(自身を除く): 151394060

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 199, 380, 398, 796, 995, 1637, 1990, 3274, 3781, 3980, 6548, 7562, 8185, 15124, 16370, 18905, 31103, 32740, 37810, 62206, 75620, 124412, 155515, 311030, 325763, 622060, 651526, 1303052, 1628815, 3257630, 6189497, 6515260, 12378994, 24757988, 30947485, 61894970, 123789940]

約数ペア:

[(1, 123789940), (2, 61894970), (4, 30947485), (5, 24757988), (10, 12378994), (19, 6515260), (20, 6189497), (38, 3257630), (76, 1628815), (95, 1303052), (190, 651526), (199, 622060), (380, 325763), (398, 311030), (796, 155515), (995, 124412), (1637, 75620), (1990, 62206), (3274, 37810), (3781, 32740), (3980, 31103), (6548, 18905), (7562, 16370), (8185, 15124)]