18105020

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{4549}}^1$

素因数の和:4757

約数の個数: 24

約数和(自身を含む): 38220000

約数和(自身を除く): 20114980

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 4549, 9098, 18196, 22745, 45490, 90980, 905251, 1810502, 3621004, 4526255, 9052510, 18105020]

約数ペア:

[(1, 18105020), (2, 9052510), (4, 4526255), (5, 3621004), (10, 1810502), (20, 905251), (199, 90980), (398, 45490), (796, 22745), (995, 18196), (1990, 9098), (3980, 4549)]