20728545

素因数分解:

$3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{15527}}^1$

素因数の和:15624

約数の個数: 16

約数和(自身を含む): 33540480

約数和(自身を除く): 12811935

約数列:

[1, 3, 5, 15, 89, 267, 445, 1335, 15527, 46581, 77635, 232905, 1381903, 4145709, 6909515, 20728545]

約数ペア:

[(1, 20728545), (3, 6909515), (5, 4145709), (15, 1381903), (89, 232905), (267, 77635), (445, 46581), (1335, 15527)]