31121720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{111149}}^1$

素因数の和:111167

約数の個数: 32

約数和(自身を含む): 80028000

約数和(自身を除く): 48906280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 111149, 222298, 444596, 555745, 778043, 889192, 1111490, 1556086, 2222980, 3112172, 3890215, 4445960, 6224344, 7780430, 15560860, 31121720]

約数ペア:

[(1, 31121720), (2, 15560860), (4, 7780430), (5, 6224344), (7, 4445960), (8, 3890215), (10, 3112172), (14, 2222980), (20, 1556086), (28, 1111490), (35, 889192), (40, 778043), (56, 555745), (70, 444596), (140, 222298), (280, 111149)]