20003895

素因数分解:

$3^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{2087}}^1$

素因数の和:2172

約数の個数: 32

約数和(自身を含む): 36080640

約数和(自身を除く): 16076745

約数列:

[1, 3, 5, 9, 15, 27, 45, 71, 135, 213, 355, 639, 1065, 1917, 2087, 3195, 6261, 9585, 10435, 18783, 31305, 56349, 93915, 148177, 281745, 444531, 740885, 1333593, 2222655, 4000779, 6667965, 20003895]

約数ペア:

[(1, 20003895), (3, 6667965), (5, 4000779), (9, 2222655), (15, 1333593), (27, 740885), (45, 444531), (71, 281745), (135, 148177), (213, 93915), (355, 56349), (639, 31305), (1065, 18783), (1917, 10435), (2087, 9585), (3195, 6261)]