81781956

素因数分解:

$2^2\times 3^2\times {\mathrm{2271721}}^1$

素因数の和:2271731

約数の個数: 18

約数和(自身を含む): 206726702

約数和(自身を除く): 124944746

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 2271721, 4543442, 6815163, 9086884, 13630326, 20445489, 27260652, 40890978, 81781956]

約数ペア:

[(1, 81781956), (2, 40890978), (3, 27260652), (4, 20445489), (6, 13630326), (9, 9086884), (12, 6815163), (18, 4543442), (36, 2271721)]