40042780

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{10061}}^1$

素因数の和:10269

約数の個数: 24

約数和(自身を含む): 84520800

約数和(自身を除く): 44478020

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 10061, 20122, 40244, 50305, 100610, 201220, 2002139, 4004278, 8008556, 10010695, 20021390, 40042780]

約数ペア:

[(1, 40042780), (2, 20021390), (4, 10010695), (5, 8008556), (10, 4004278), (20, 2002139), (199, 201220), (398, 100610), (796, 50305), (995, 40244), (1990, 20122), (3980, 10061)]