20866565

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{7919}}^1$

素因数の和:7972

約数の個数: 16

約数和(自身を含む): 27371520

約数和(自身を除く): 6504955

約数列:

[1, 5, 17, 31, 85, 155, 527, 2635, 7919, 39595, 134623, 245489, 673115, 1227445, 4173313, 20866565]

約数ペア:

[(1, 20866565), (5, 4173313), (17, 1227445), (31, 673115), (85, 245489), (155, 134623), (527, 39595), (2635, 7919)]