21706419

素因数分解:

$3^1\times 7^1\times {\mathrm{821}}^1\times {\mathrm{1259}}^1$

素因数の和:2090

約数の個数: 16

約数和(自身を含む): 33143040

約数和(自身を除く): 11436621

約数列:

[1, 3, 7, 21, 821, 1259, 2463, 3777, 5747, 8813, 17241, 26439, 1033639, 3100917, 7235473, 21706419]

約数ペア:

[(1, 21706419), (3, 7235473), (7, 3100917), (21, 1033639), (821, 26439), (1259, 17241), (2463, 8813), (3777, 5747)]