20578045

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1$

素因数の和:205

約数の個数: 32

約数和(自身を含む): 27319680

約数和(自身を除く): 6741635

約数列:

[1, 5, 19, 53, 61, 67, 95, 265, 305, 335, 1007, 1159, 1273, 3233, 3551, 4087, 5035, 5795, 6365, 16165, 17755, 20435, 61427, 67469, 77653, 216611, 307135, 337345, 388265, 1083055, 4115609, 20578045]

約数ペア:

[(1, 20578045), (5, 4115609), (19, 1083055), (53, 388265), (61, 337345), (67, 307135), (95, 216611), (265, 77653), (305, 67469), (335, 61427), (1007, 20435), (1159, 17755), (1273, 16165), (3233, 6365), (3551, 5795), (4087, 5035)]