19977085

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{311}}^1\times {\mathrm{443}}^1$

素因数の和:788

約数の個数: 16

約数和(自身を含む): 24935040

約数和(自身を除く): 4957955

約数列:

[1, 5, 29, 145, 311, 443, 1555, 2215, 9019, 12847, 45095, 64235, 137773, 688865, 3995417, 19977085]

約数ペア:

[(1, 19977085), (5, 3995417), (29, 688865), (145, 137773), (311, 64235), (443, 45095), (1555, 12847), (2215, 9019)]