12938980

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{3251}}^1$

素因数の和:3459

約数の個数: 24

約数和(自身を含む): 27316800

約数和(自身を除く): 14377820

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3251, 3980, 6502, 13004, 16255, 32510, 65020, 646949, 1293898, 2587796, 3234745, 6469490, 12938980]

約数ペア:

[(1, 12938980), (2, 6469490), (4, 3234745), (5, 2587796), (10, 1293898), (20, 646949), (199, 65020), (398, 32510), (796, 16255), (995, 13004), (1990, 6502), (3251, 3980)]