19859255

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{2803}}^1$

素因数の和:2930

約数の個数: 16

約数和(自身を含む): 25908960

約数和(自身を除く): 6049705

約数列:

[1, 5, 13, 65, 109, 545, 1417, 2803, 7085, 14015, 36439, 182195, 305527, 1527635, 3971851, 19859255]

約数ペア:

[(1, 19859255), (5, 3971851), (13, 1527635), (65, 305527), (109, 182195), (545, 36439), (1417, 14015), (2803, 7085)]