21108668

素因数分解:

$2^2\times 7^1\times {\mathrm{691}}^1\times {\mathrm{1091}}^1$

素因数の和:1793

約数の個数: 24

約数和(自身を含む): 42317184

約数和(自身を除く): 21208516

約数列:

[1, 2, 4, 7, 14, 28, 691, 1091, 1382, 2182, 2764, 4364, 4837, 7637, 9674, 15274, 19348, 30548, 753881, 1507762, 3015524, 5277167, 10554334, 21108668]

約数ペア:

[(1, 21108668), (2, 10554334), (4, 5277167), (7, 3015524), (14, 1507762), (28, 753881), (691, 30548), (1091, 19348), (1382, 15274), (2182, 9674), (2764, 7637), (4364, 4837)]