209742015

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{1997543}}^1$

素因数の和:1997558

約数の個数: 16

約数和(自身を含む): 383528448

約数和(自身を除く): 173786433

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 1997543, 5992629, 9987715, 13982801, 29963145, 41948403, 69914005, 209742015]

約数ペア:

[(1, 209742015), (3, 69914005), (5, 41948403), (7, 29963145), (15, 13982801), (21, 9987715), (35, 5992629), (105, 1997543)]