31987720

素因数分解:

$2^3\times 5^1\times {\mathrm{367}}^1\times {\mathrm{2179}}^1$

素因数の和:2557

約数の個数: 32

約数和(自身を含む): 72201600

約数和(自身を除く): 40213880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 367, 734, 1468, 1835, 2179, 2936, 3670, 4358, 7340, 8716, 10895, 14680, 17432, 21790, 43580, 87160, 799693, 1599386, 3198772, 3998465, 6397544, 7996930, 15993860, 31987720]

約数ペア:

[(1, 31987720), (2, 15993860), (4, 7996930), (5, 6397544), (8, 3998465), (10, 3198772), (20, 1599386), (40, 799693), (367, 87160), (734, 43580), (1468, 21790), (1835, 17432), (2179, 14680), (2936, 10895), (3670, 8716), (4358, 7340)]