19719332307

素因数分解:

$3^4\times {\mathrm{557}}^1\times {\mathrm{437071}}^1$

素因数の和:437640

約数の個数: 20

約数和(自身を含む): 29510227296

約数和(自身を除く): 9790894989

約数列:

[1, 3, 9, 27, 81, 557, 1671, 5013, 15039, 45117, 437071, 1311213, 3933639, 11800917, 35402751, 243448547, 730345641, 2191036923, 6573110769, 19719332307]

約数ペア:

[(1, 19719332307), (3, 6573110769), (9, 2191036923), (27, 730345641), (81, 243448547), (557, 35402751), (1671, 11800917), (5013, 3933639), (15039, 1311213), (45117, 437071)]