217887159

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{220757}}^1$

素因数の和:220814

約数の個数: 16

約数和(自身を含む): 339084288

約数和(自身を除く): 121197129

約数列:

[1, 3, 7, 21, 47, 141, 329, 987, 220757, 662271, 1545299, 4635897, 10375579, 31126737, 72629053, 217887159]

約数ペア:

[(1, 217887159), (3, 72629053), (7, 31126737), (21, 10375579), (47, 4635897), (141, 1545299), (329, 662271), (987, 220757)]