21220802

素因数分解:

$2^1\times {\mathrm{31}}^2\times {\mathrm{61}}^1\times {\mathrm{181}}^1$

素因数の和:306

約数の個数: 24

約数和(自身を含む): 33615036

約数和(自身を除く): 12394234

約数列:

[1, 2, 31, 61, 62, 122, 181, 362, 961, 1891, 1922, 3782, 5611, 11041, 11222, 22082, 58621, 117242, 173941, 342271, 347882, 684542, 10610401, 21220802]

約数ペア:

[(1, 21220802), (2, 10610401), (31, 684542), (61, 347882), (62, 342271), (122, 173941), (181, 117242), (362, 58621), (961, 22082), (1891, 11222), (1922, 11041), (3782, 5611)]