21393760

素因数分解:

$2^5\times 5^1\times {\mathrm{133711}}^1$

素因数の和:133726

約数の個数: 24

約数和(自身を含む): 50543136

約数和(自身を除く): 29149376

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 133711, 267422, 534844, 668555, 1069688, 1337110, 2139376, 2674220, 4278752, 5348440, 10696880, 21393760]

約数ペア:

[(1, 21393760), (2, 10696880), (4, 5348440), (5, 4278752), (8, 2674220), (10, 2139376), (16, 1337110), (20, 1069688), (32, 668555), (40, 534844), (80, 267422), (160, 133711)]