19805665

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{8783}}^1$

素因数の和:8840

約数の個数: 16

約数和(自身を含む): 26562816

約数和(自身を除く): 6757151

約数列:

[1, 5, 11, 41, 55, 205, 451, 2255, 8783, 43915, 96613, 360103, 483065, 1800515, 3961133, 19805665]

約数ペア:

[(1, 19805665), (5, 3961133), (11, 1800515), (41, 483065), (55, 360103), (205, 96613), (451, 43915), (2255, 8783)]