21012685

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{2503}}^1$

素因数の和:2604

約数の個数: 16

約数和(自身を含む): 26682624

約数和(自身を除く): 5669939

約数列:

[1, 5, 23, 73, 115, 365, 1679, 2503, 8395, 12515, 57569, 182719, 287845, 913595, 4202537, 21012685]

約数ペア:

[(1, 21012685), (5, 4202537), (23, 913595), (73, 287845), (115, 182719), (365, 57569), (1679, 12515), (2503, 8395)]