21256534

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{19013}}^1$

素因数の和:19071

約数の個数: 16

約数和(自身を含む): 35137872

約数和(自身を除く): 13881338

約数列:

[1, 2, 13, 26, 43, 86, 559, 1118, 19013, 38026, 247169, 494338, 817559, 1635118, 10628267, 21256534]

約数ペア:

[(1, 21256534), (2, 10628267), (13, 1635118), (26, 817559), (43, 494338), (86, 247169), (559, 38026), (1118, 19013)]