20661407

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{167}}^1\times {\mathrm{307}}^1$

素因数の和:518

約数の個数: 16

約数和(自身を含む): 23181312

約数和(自身を除く): 2519905

約数列:

[1, 13, 31, 167, 307, 403, 2171, 3991, 5177, 9517, 51269, 67301, 123721, 666497, 1589339, 20661407]

約数ペア:

[(1, 20661407), (13, 1589339), (31, 666497), (167, 123721), (307, 67301), (403, 51269), (2171, 9517), (3991, 5177)]