20917605

素因数分解:

$3^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{13807}}^1$

素因数の和:13916

約数の個数: 16

約数和(自身を含む): 33801984

約数和(自身を除く): 12884379

約数列:

[1, 3, 5, 15, 101, 303, 505, 1515, 13807, 41421, 69035, 207105, 1394507, 4183521, 6972535, 20917605]

約数ペア:

[(1, 20917605), (3, 6972535), (5, 4183521), (15, 1394507), (101, 207105), (303, 69035), (505, 41421), (1515, 13807)]