20380025

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{607}}^1$

素因数の和:713

約数の個数: 24

約数和(自身を含む): 27141120

約数和(自身を除く): 6761095

約数列:

[1, 5, 17, 25, 79, 85, 395, 425, 607, 1343, 1975, 3035, 6715, 10319, 15175, 33575, 47953, 51595, 239765, 257975, 815201, 1198825, 4076005, 20380025]

約数ペア:

[(1, 20380025), (5, 4076005), (17, 1198825), (25, 815201), (79, 257975), (85, 239765), (395, 51595), (425, 47953), (607, 33575), (1343, 15175), (1975, 10319), (3035, 6715)]