21469955

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{2411}}^1$

素因数の和:2566

約数の個数: 16

約数和(自身を含む): 27959904

約数和(自身を除く): 6489949

約数列:

[1, 5, 13, 65, 137, 685, 1781, 2411, 8905, 12055, 31343, 156715, 330307, 1651535, 4293991, 21469955]

約数ペア:

[(1, 21469955), (5, 4293991), (13, 1651535), (65, 330307), (137, 156715), (685, 31343), (1781, 12055), (2411, 8905)]