21656048

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{71237}}^1$

素因数の和:71264

約数の個数: 20

約数和(自身を含む): 44167560

約数和(自身を除く): 22511512

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 71237, 142474, 284948, 569896, 1139792, 1353503, 2707006, 5414012, 10828024, 21656048]

約数ペア:

[(1, 21656048), (2, 10828024), (4, 5414012), (8, 2707006), (16, 1353503), (19, 1139792), (38, 569896), (76, 284948), (152, 142474), (304, 71237)]