20396019

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{313}}^1$

素因数の和:459

約数の個数: 32

約数和(自身を含む): 32555520

約数和(自身を除く): 12159501

約数列:

[1, 3, 7, 21, 29, 87, 107, 203, 313, 321, 609, 749, 939, 2191, 2247, 3103, 6573, 9077, 9309, 21721, 27231, 33491, 63539, 65163, 100473, 190617, 234437, 703311, 971239, 2913717, 6798673, 20396019]

約数ペア:

[(1, 20396019), (3, 6798673), (7, 2913717), (21, 971239), (29, 703311), (87, 234437), (107, 190617), (203, 100473), (313, 65163), (321, 63539), (609, 33491), (749, 27231), (939, 21721), (2191, 9309), (2247, 9077), (3103, 6573)]