20849505

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{19577}}^1$

素因数の和:19656

約数の個数: 16

約数和(自身を含む): 33830784

約数和(自身を除く): 12981279

約数列:

[1, 3, 5, 15, 71, 213, 355, 1065, 19577, 58731, 97885, 293655, 1389967, 4169901, 6949835, 20849505]

約数ペア:

[(1, 20849505), (3, 6949835), (5, 4169901), (15, 1389967), (71, 293655), (213, 97885), (355, 58731), (1065, 19577)]