20889175

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{2137}}^1$

素因数の和:2187

約数の個数: 24

約数和(自身を含む): 28632096

約数和(自身を除く): 7742921

約数列:

[1, 5, 17, 23, 25, 85, 115, 391, 425, 575, 1955, 2137, 9775, 10685, 36329, 49151, 53425, 181645, 245755, 835567, 908225, 1228775, 4177835, 20889175]

約数ペア:

[(1, 20889175), (5, 4177835), (17, 1228775), (23, 908225), (25, 835567), (85, 245755), (115, 181645), (391, 53425), (425, 49151), (575, 36329), (1955, 10685), (2137, 9775)]