21028904

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{202201}}^1$

素因数の和:202220

約数の個数: 16

約数和(自身を含む): 42462420

約数和(自身を除く): 21433516

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 202201, 404402, 808804, 1617608, 2628613, 5257226, 10514452, 21028904]

約数ペア:

[(1, 21028904), (2, 10514452), (4, 5257226), (8, 2628613), (13, 1617608), (26, 808804), (52, 404402), (104, 202201)]