20807215

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29101}}^1$

素因数の和:29130

約数の個数: 16

約数和(自身を含む): 29334816

約数和(自身を除く): 8527601

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 29101, 145505, 320111, 378313, 1600555, 1891565, 4161443, 20807215]

約数ペア:

[(1, 20807215), (5, 4161443), (11, 1891565), (13, 1600555), (55, 378313), (65, 320111), (143, 145505), (715, 29101)]