20319715

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{139}}^1\times {\mathrm{173}}^1$

素因数の和:343

約数の個数: 24

約数和(自身を含む): 26747280

約数和(自身を除く): 6427565

約数列:

[1, 5, 13, 65, 139, 169, 173, 695, 845, 865, 1807, 2249, 9035, 11245, 23491, 24047, 29237, 117455, 120235, 146185, 312611, 1563055, 4063943, 20319715]

約数ペア:

[(1, 20319715), (5, 4063943), (13, 1563055), (65, 312611), (139, 146185), (169, 120235), (173, 117455), (695, 29237), (845, 24047), (865, 23491), (1807, 11245), (2249, 9035)]