21254145

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{128813}}^1$

素因数の和:128832

約数の個数: 16

約数和(自身を含む): 37098432

約数和(自身を除く): 15844287

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 128813, 386439, 644065, 1416943, 1932195, 4250829, 7084715, 21254145]

約数ペア:

[(1, 21254145), (3, 7084715), (5, 4250829), (11, 1932195), (15, 1416943), (33, 644065), (55, 386439), (165, 128813)]