20397895

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{25339}}^1$

素因数の和:25374

約数の個数: 16

約数和(自身を含む): 29191680

約数和(自身を除く): 8793785

約数列:

[1, 5, 7, 23, 35, 115, 161, 805, 25339, 126695, 177373, 582797, 886865, 2913985, 4079579, 20397895]

約数ペア:

[(1, 20397895), (5, 4079579), (7, 2913985), (23, 886865), (35, 582797), (115, 177373), (161, 126695), (805, 25339)]