209985207

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{216703}}^1$

素因数の和:216742

約数の個数: 16

約数和(自身を含む): 312053760

約数和(自身を除く): 102068553

約数列:

[1, 3, 17, 19, 51, 57, 323, 969, 216703, 650109, 3683951, 4117357, 11051853, 12352071, 69995069, 209985207]

約数ペア:

[(1, 209985207), (3, 69995069), (17, 12352071), (19, 11051853), (51, 4117357), (57, 3683951), (323, 650109), (969, 216703)]