21075945

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{127733}}^1$

素因数の和:127752

約数の個数: 16

約数和(自身を含む): 36787392

約数和(自身を除く): 15711447

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 127733, 383199, 638665, 1405063, 1915995, 4215189, 7025315, 21075945]

約数ペア:

[(1, 21075945), (3, 7025315), (5, 4215189), (11, 1915995), (15, 1405063), (33, 638665), (55, 383199), (165, 127733)]