21033987

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{6827}}^1$

素因数の和:6922

約数の個数: 16

約数和(自身を含む): 30589440

約数和(自身を除く): 9555453

約数列:

[1, 3, 13, 39, 79, 237, 1027, 3081, 6827, 20481, 88751, 266253, 539333, 1617999, 7011329, 21033987]

約数ペア:

[(1, 21033987), (3, 7011329), (13, 1617999), (39, 539333), (79, 266253), (237, 88751), (1027, 20481), (3081, 6827)]