131031640

素因数分解:

$2^3\times 5^1\times {\mathrm{1123}}^1\times {\mathrm{2917}}^1$

素因数の和:4051

約数の個数: 32

約数和(自身を含む): 295184880

約数和(自身を除く): 164153240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1123, 2246, 2917, 4492, 5615, 5834, 8984, 11230, 11668, 14585, 22460, 23336, 29170, 44920, 58340, 116680, 3275791, 6551582, 13103164, 16378955, 26206328, 32757910, 65515820, 131031640]

約数ペア:

[(1, 131031640), (2, 65515820), (4, 32757910), (5, 26206328), (8, 16378955), (10, 13103164), (20, 6551582), (40, 3275791), (1123, 116680), (2246, 58340), (2917, 44920), (4492, 29170), (5615, 23336), (5834, 22460), (8984, 14585), (11230, 11668)]