21483819

素因数分解:

$3^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1601}}^1$

素因数の和:1688

約数の個数: 32

約数和(自身を含む): 36910080

約数和(自身を除く): 15426261

約数列:

[1, 3, 7, 9, 21, 27, 63, 71, 189, 213, 497, 639, 1491, 1601, 1917, 4473, 4803, 11207, 13419, 14409, 33621, 43227, 100863, 113671, 302589, 341013, 795697, 1023039, 2387091, 3069117, 7161273, 21483819]

約数ペア:

[(1, 21483819), (3, 7161273), (7, 3069117), (9, 2387091), (21, 1023039), (27, 795697), (63, 341013), (71, 302589), (189, 113671), (213, 100863), (497, 43227), (639, 33621), (1491, 14409), (1601, 13419), (1917, 11207), (4473, 4803)]