21951655

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{1553}}^1$

素因数の和:1826

約数の個数: 16

約数和(自身を含む): 28867104

約数和(自身を除く): 6915449

約数列:

[1, 5, 11, 55, 257, 1285, 1553, 2827, 7765, 14135, 17083, 85415, 399121, 1995605, 4390331, 21951655]

約数ペア:

[(1, 21951655), (5, 4390331), (11, 1995605), (55, 399121), (257, 85415), (1285, 17083), (1553, 14135), (2827, 7765)]