21402719

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{1523}}^1$

素因数の和:1606

約数の個数: 16

約数和(自身を含む): 24579072

約数和(自身を除く): 3176353

約数列:

[1, 13, 23, 47, 299, 611, 1081, 1523, 14053, 19799, 35029, 71581, 455377, 930553, 1646363, 21402719]

約数ペア:

[(1, 21402719), (13, 1646363), (23, 930553), (47, 455377), (299, 71581), (611, 35029), (1081, 19799), (1523, 14053)]