21223281

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{1583}}^1$

素因数の和:1736

約数の個数: 16

約数和(自身を含む): 29272320

約数和(自身を除く): 8049039

約数列:

[1, 3, 41, 109, 123, 327, 1583, 4469, 4749, 13407, 64903, 172547, 194709, 517641, 7074427, 21223281]

約数ペア:

[(1, 21223281), (3, 7074427), (41, 517641), (109, 194709), (123, 172547), (327, 64903), (1583, 13407), (4469, 4749)]