20489128

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{1483}}^1$

素因数の和:1657

約数の個数: 32

約数和(自身を含む): 42204960

約数和(自身を除く): 21715832

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 157, 314, 628, 1256, 1483, 1727, 2966, 3454, 5932, 6908, 11864, 13816, 16313, 32626, 65252, 130504, 232831, 465662, 931324, 1862648, 2561141, 5122282, 10244564, 20489128]

約数ペア:

[(1, 20489128), (2, 10244564), (4, 5122282), (8, 2561141), (11, 1862648), (22, 931324), (44, 465662), (88, 232831), (157, 130504), (314, 65252), (628, 32626), (1256, 16313), (1483, 13816), (1727, 11864), (2966, 6908), (3454, 5932)]