20955275

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{421}}^1$

素因数の和:623

約数の個数: 24

約数和(自身を含む): 28571088

約数和(自身を除く): 7615813

約数列:

[1, 5, 11, 25, 55, 181, 275, 421, 905, 1991, 2105, 4525, 4631, 9955, 10525, 23155, 49775, 76201, 115775, 381005, 838211, 1905025, 4191055, 20955275]

約数ペア:

[(1, 20955275), (5, 4191055), (11, 1905025), (25, 838211), (55, 381005), (181, 115775), (275, 76201), (421, 49775), (905, 23155), (1991, 10525), (2105, 9955), (4525, 4631)]