216522817

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{142543}}^1$

素因数の和:142588

約数の個数: 12

約数和(自身を含む): 260000256

約数和(自身を除く): 43477439

約数列:

[1, 7, 31, 49, 217, 1519, 142543, 997801, 4418833, 6984607, 30931831, 216522817]

約数ペア:

[(1, 216522817), (7, 30931831), (31, 6984607), (49, 4418833), (217, 997801), (1519, 142543)]