21550015

素因数分解:

$5^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{613}}^1$

素因数の和:786

約数の個数: 16

約数和(自身を含む): 26524800

約数和(自身を除く): 4974785

約数列:

[1, 5, 79, 89, 395, 445, 613, 3065, 7031, 35155, 48427, 54557, 242135, 272785, 4310003, 21550015]

約数ペア:

[(1, 21550015), (5, 4310003), (79, 272785), (89, 242135), (395, 54557), (445, 48427), (613, 35155), (3065, 7031)]