20900995

素因数分解:

$5^1\times {\mathrm{73}}^1\times {\mathrm{173}}^1\times {\mathrm{331}}^1$

素因数の和:582

約数の個数: 16

約数和(自身を含む): 25648992

約数和(自身を除く): 4747997

約数列:

[1, 5, 73, 173, 331, 365, 865, 1655, 12629, 24163, 57263, 63145, 120815, 286315, 4180199, 20900995]

約数ペア:

[(1, 20900995), (5, 4180199), (73, 286315), (173, 120815), (331, 63145), (365, 57263), (865, 24163), (1655, 12629)]