20129356

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{521}}^1\times {\mathrm{743}}^1$

素因数の和:1281

約数の個数: 24

約数和(自身を含む): 38060064

約数和(自身を除く): 17930708

約数列:

[1, 2, 4, 13, 26, 52, 521, 743, 1042, 1486, 2084, 2972, 6773, 9659, 13546, 19318, 27092, 38636, 387103, 774206, 1548412, 5032339, 10064678, 20129356]

約数ペア:

[(1, 20129356), (2, 10064678), (4, 5032339), (13, 1548412), (26, 774206), (52, 387103), (521, 38636), (743, 27092), (1042, 19318), (1486, 13546), (2084, 9659), (2972, 6773)]