21817915

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{27103}}^1$

素因数の和:27138

約数の個数: 16

約数和(自身を含む): 31223808

約数和(自身を除く): 9405893

約数列:

[1, 5, 7, 23, 35, 115, 161, 805, 27103, 135515, 189721, 623369, 948605, 3116845, 4363583, 21817915]

約数ペア:

[(1, 21817915), (5, 4363583), (7, 3116845), (23, 948605), (35, 623369), (115, 189721), (161, 135515), (805, 27103)]