20971390

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{190649}}^1$

素因数の和:190667

約数の個数: 16

約数和(自身を含む): 41180400

約数和(自身を除く): 20209010

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 190649, 381298, 953245, 1906490, 2097139, 4194278, 10485695, 20971390]

約数ペア:

[(1, 20971390), (2, 10485695), (5, 4194278), (10, 2097139), (11, 1906490), (22, 953245), (55, 381298), (110, 190649)]