21817135

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{379}}^1\times {\mathrm{397}}^1$

素因数の和:810

約数の個数: 16

約数和(自身を含む): 27223200

約数和(自身を除く): 5406065

約数列:

[1, 5, 29, 145, 379, 397, 1895, 1985, 10991, 11513, 54955, 57565, 150463, 752315, 4363427, 21817135]

約数ペア:

[(1, 21817135), (5, 4363427), (29, 752315), (145, 150463), (379, 57565), (397, 54955), (1895, 11513), (1985, 10991)]