20408505

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{104659}}^1$

素因数の和:104680

約数の個数: 16

約数和(自身を含む): 35165760

約数和(自身を除く): 14757255

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 104659, 313977, 523295, 1360567, 1569885, 4081701, 6802835, 20408505]

約数ペア:

[(1, 20408505), (3, 6802835), (5, 4081701), (13, 1569885), (15, 1360567), (39, 523295), (65, 313977), (195, 104659)]