12887240

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1619}}^1$

素因数の和:1829

約数の個数: 32

約数和(自身を含む): 29160000

約数和(自身を除く): 16272760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1619, 1990, 3238, 3980, 6476, 7960, 8095, 12952, 16190, 32380, 64760, 322181, 644362, 1288724, 1610905, 2577448, 3221810, 6443620, 12887240]

約数ペア:

[(1, 12887240), (2, 6443620), (4, 3221810), (5, 2577448), (8, 1610905), (10, 1288724), (20, 644362), (40, 322181), (199, 64760), (398, 32380), (796, 16190), (995, 12952), (1592, 8095), (1619, 7960), (1990, 6476), (3238, 3980)]