20212775

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{2371}}^1$

素因数の和:2423

約数の個数: 24

約数和(自身を含む): 28236288

約数和(自身を除く): 8023513

約数列:

[1, 5, 11, 25, 31, 55, 155, 275, 341, 775, 1705, 2371, 8525, 11855, 26081, 59275, 73501, 130405, 367505, 652025, 808511, 1837525, 4042555, 20212775]

約数ペア:

[(1, 20212775), (5, 4042555), (11, 1837525), (25, 808511), (31, 652025), (55, 367505), (155, 130405), (275, 73501), (341, 59275), (775, 26081), (1705, 11855), (2371, 8525)]