11891960

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{1409}}^1$

素因数の和:1631

約数の個数: 32

約数和(自身を含む): 26902800

約数和(自身を除く): 15010840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1409, 1688, 2110, 2818, 4220, 5636, 7045, 8440, 11272, 14090, 28180, 56360, 297299, 594598, 1189196, 1486495, 2378392, 2972990, 5945980, 11891960]

約数ペア:

[(1, 11891960), (2, 5945980), (4, 2972990), (5, 2378392), (8, 1486495), (10, 1189196), (20, 594598), (40, 297299), (211, 56360), (422, 28180), (844, 14090), (1055, 11272), (1409, 8440), (1688, 7045), (2110, 5636), (2818, 4220)]