21551344

素因数分解:

$2^4\times {\mathrm{401}}^1\times {\mathrm{3359}}^1$

素因数の和:3768

約数の個数: 20

約数和(自身を含む): 41872320

約数和(自身を除く): 20320976

約数列:

[1, 2, 4, 8, 16, 401, 802, 1604, 3208, 3359, 6416, 6718, 13436, 26872, 53744, 1346959, 2693918, 5387836, 10775672, 21551344]

約数ペア:

[(1, 21551344), (2, 10775672), (4, 5387836), (8, 2693918), (16, 1346959), (401, 53744), (802, 26872), (1604, 13436), (3208, 6718), (3359, 6416)]