20478104

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{1163}}^1$

素因数の和:1271

約数の個数: 32

約数和(自身を含む): 40227840

約数和(自身を除く): 19749736

約数列:

[1, 2, 4, 8, 31, 62, 71, 124, 142, 248, 284, 568, 1163, 2201, 2326, 4402, 4652, 8804, 9304, 17608, 36053, 72106, 82573, 144212, 165146, 288424, 330292, 660584, 2559763, 5119526, 10239052, 20478104]

約数ペア:

[(1, 20478104), (2, 10239052), (4, 5119526), (8, 2559763), (31, 660584), (62, 330292), (71, 288424), (124, 165146), (142, 144212), (248, 82573), (284, 72106), (568, 36053), (1163, 17608), (2201, 9304), (2326, 8804), (4402, 4652)]