31267820

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{4019}}^1$

素因数の和:4417

約数の個数: 24

約数和(自身を含む): 65847600

約数和(自身を除く): 34579780

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 1556, 1945, 3890, 4019, 7780, 8038, 16076, 20095, 40190, 80380, 1563391, 3126782, 6253564, 7816955, 15633910, 31267820]

約数ペア:

[(1, 31267820), (2, 15633910), (4, 7816955), (5, 6253564), (10, 3126782), (20, 1563391), (389, 80380), (778, 40190), (1556, 20095), (1945, 16076), (3890, 8038), (4019, 7780)]