31445980

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{7901}}^1$

素因数の和:8109

約数の個数: 24

約数和(自身を含む): 66376800

約数和(自身を除く): 34930820

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 7901, 15802, 31604, 39505, 79010, 158020, 1572299, 3144598, 6289196, 7861495, 15722990, 31445980]

約数ペア:

[(1, 31445980), (2, 15722990), (4, 7861495), (5, 6289196), (10, 3144598), (20, 1572299), (199, 158020), (398, 79010), (796, 39505), (995, 31604), (1990, 15802), (3980, 7901)]