217451521

素因数分解:

$7^1\times {\mathrm{59}}^1\times {\mathrm{239}}^1\times {\mathrm{2203}}^1$

素因数の和:2508

約数の個数: 16

約数和(自身を含む): 253900800

約数和(自身を除く): 36449279

約数列:

[1, 7, 59, 239, 413, 1673, 2203, 14101, 15421, 98707, 129977, 526517, 909839, 3685619, 31064503, 217451521]

約数ペア:

[(1, 217451521), (7, 31064503), (59, 3685619), (239, 909839), (413, 526517), (1673, 129977), (2203, 98707), (14101, 15421)]