21013025

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1777}}^1$

素因数の和:1841

約数の個数: 24

約数和(自身を含む): 29102304

約数和(自身を除く): 8089279

約数列:

[1, 5, 11, 25, 43, 55, 215, 275, 473, 1075, 1777, 2365, 8885, 11825, 19547, 44425, 76411, 97735, 382055, 488675, 840521, 1910275, 4202605, 21013025]

約数ペア:

[(1, 21013025), (5, 4202605), (11, 1910275), (25, 840521), (43, 488675), (55, 382055), (215, 97735), (275, 76411), (473, 44425), (1075, 19547), (1777, 11825), (2365, 8885)]