21978138

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{40253}}^1$

素因数の和:40278

約数の個数: 32

約数和(自身を含む): 54101376

約数和(自身を除く): 32123238

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 78, 91, 182, 273, 546, 40253, 80506, 120759, 241518, 281771, 523289, 563542, 845313, 1046578, 1569867, 1690626, 3139734, 3663023, 7326046, 10989069, 21978138]

約数ペア:

[(1, 21978138), (2, 10989069), (3, 7326046), (6, 3663023), (7, 3139734), (13, 1690626), (14, 1569867), (21, 1046578), (26, 845313), (39, 563542), (42, 523289), (78, 281771), (91, 241518), (182, 120759), (273, 80506), (546, 40253)]