20781646207

素因数分解:

$7^1\times {\mathrm{19}}^2\times {\mathrm{353}}^1\times {\mathrm{23297}}^1$

素因数の和:23695

約数の個数: 24

約数和(自身を含む): 25138355616

約数和(自身を除く): 4356709409

約数列:

[1, 7, 19, 133, 353, 361, 2471, 2527, 6707, 23297, 46949, 127433, 163079, 442643, 892031, 3098501, 8223841, 8410217, 57566887, 58871519, 156252979, 1093770853, 2968806601, 20781646207]

約数ペア:

[(1, 20781646207), (7, 2968806601), (19, 1093770853), (133, 156252979), (353, 58871519), (361, 57566887), (2471, 8410217), (2527, 8223841), (6707, 3098501), (23297, 892031), (46949, 442643), (127433, 163079)]