20978185

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{9601}}^1$

素因数の和:9648

約数の個数: 16

約数和(自身を含む): 27653760

約数和(自身を除く): 6675575

約数列:

[1, 5, 19, 23, 95, 115, 437, 2185, 9601, 48005, 182419, 220823, 912095, 1104115, 4195637, 20978185]

約数ペア:

[(1, 20978185), (5, 4195637), (19, 1104115), (23, 912095), (95, 220823), (115, 182419), (437, 48005), (2185, 9601)]