21895655

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{4051}}^1$

素因数の和:4126

約数の個数: 16

約数和(自身を含む): 28007424

約数和(自身を除く): 6111769

約数列:

[1, 5, 23, 47, 115, 235, 1081, 4051, 5405, 20255, 93173, 190397, 465865, 951985, 4379131, 21895655]

約数ペア:

[(1, 21895655), (5, 4379131), (23, 951985), (47, 465865), (115, 190397), (235, 93173), (1081, 20255), (4051, 5405)]