21453025

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{431}}^1$

素因数の和:633

約数の個数: 24

約数和(自身を含む): 29248128

約数和(自身を除く): 7795103

約数列:

[1, 5, 11, 25, 55, 181, 275, 431, 905, 1991, 2155, 4525, 4741, 9955, 10775, 23705, 49775, 78011, 118525, 390055, 858121, 1950275, 4290605, 21453025]

約数ペア:

[(1, 21453025), (5, 4290605), (11, 1950275), (25, 858121), (55, 390055), (181, 118525), (275, 78011), (431, 49775), (905, 23705), (1991, 10775), (2155, 9955), (4525, 4741)]