21667390

素因数分解:

$2^1\times 5^1\times {\mathrm{1259}}^1\times {\mathrm{1721}}^1$

素因数の和:2987

約数の個数: 16

約数和(自身を含む): 39054960

約数和(自身を除く): 17387570

約数列:

[1, 2, 5, 10, 1259, 1721, 2518, 3442, 6295, 8605, 12590, 17210, 2166739, 4333478, 10833695, 21667390]

約数ペア:

[(1, 21667390), (2, 10833695), (5, 4333478), (10, 2166739), (1259, 17210), (1721, 12590), (2518, 8605), (3442, 6295)]