20727205

素因数分解:

$5^1\times {\mathrm{103}}^1\times {\mathrm{167}}^1\times {\mathrm{241}}^1$

素因数の和:516

約数の個数: 16

約数和(自身を含む): 25369344

約数和(自身を除く): 4642139

約数列:

[1, 5, 103, 167, 241, 515, 835, 1205, 17201, 24823, 40247, 86005, 124115, 201235, 4145441, 20727205]

約数ペア:

[(1, 20727205), (5, 4145441), (103, 201235), (167, 124115), (241, 86005), (515, 40247), (835, 24823), (1205, 17201)]