19782921

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{409}}^1\times {\mathrm{701}}^1$

素因数の和:1136

約数の個数: 16

約数和(自身を含む): 27630720

約数和(自身を除く): 7847799

約数列:

[1, 3, 23, 69, 409, 701, 1227, 2103, 9407, 16123, 28221, 48369, 286709, 860127, 6594307, 19782921]

約数ペア:

[(1, 19782921), (3, 6594307), (23, 860127), (69, 286709), (409, 48369), (701, 28221), (1227, 16123), (2103, 9407)]