19707805

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{6451}}^1$

素因数の和:6516

約数の個数: 16

約数和(自身を含む): 26014464

約数和(自身を除く): 6306659

約数列:

[1, 5, 13, 47, 65, 235, 611, 3055, 6451, 32255, 83863, 303197, 419315, 1515985, 3941561, 19707805]

約数ペア:

[(1, 19707805), (5, 3941561), (13, 1515985), (47, 419315), (65, 303197), (235, 83863), (611, 32255), (3055, 6451)]