19878873

素因数分解:

$3^1\times 7^1\times {\mathrm{821}}^1\times {\mathrm{1153}}^1$

素因数の和:1984

約数の個数: 16

約数和(自身を含む): 30354816

約数和(自身を除く): 10475943

約数列:

[1, 3, 7, 21, 821, 1153, 2463, 3459, 5747, 8071, 17241, 24213, 946613, 2839839, 6626291, 19878873]

約数ペア:

[(1, 19878873), (3, 6626291), (7, 2839839), (21, 946613), (821, 24213), (1153, 17241), (2463, 8071), (3459, 5747)]