20555121

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{1997}}^1$

素因数の和:2120

約数の個数: 16

約数和(自身を含む): 28387584

約数和(自身を除く): 7832463

約数列:

[1, 3, 47, 73, 141, 219, 1997, 3431, 5991, 10293, 93859, 145781, 281577, 437343, 6851707, 20555121]

約数ペア:

[(1, 20555121), (3, 6851707), (47, 437343), (73, 281577), (141, 145781), (219, 93859), (1997, 10293), (3431, 5991)]