20891805

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{2389}}^1$

素因数の和:2461

約数の個数: 32

約数和(自身を含む): 37169280

約数和(自身を除く): 16277475

約数列:

[1, 3, 5, 11, 15, 33, 53, 55, 159, 165, 265, 583, 795, 1749, 2389, 2915, 7167, 8745, 11945, 26279, 35835, 78837, 126617, 131395, 379851, 394185, 633085, 1392787, 1899255, 4178361, 6963935, 20891805]

約数ペア:

[(1, 20891805), (3, 6963935), (5, 4178361), (11, 1899255), (15, 1392787), (33, 633085), (53, 394185), (55, 379851), (159, 131395), (165, 126617), (265, 78837), (583, 35835), (795, 26279), (1749, 11945), (2389, 8745), (2915, 7167)]