20791395

素因数分解:

$3^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{941}}^1$

素因数の和:1443

約数の個数: 24

約数和(自身を含む): 36150192

約数和(自身を除く): 15358797

約数列:

[1, 3, 5, 9, 15, 45, 491, 941, 1473, 2455, 2823, 4419, 4705, 7365, 8469, 14115, 22095, 42345, 462031, 1386093, 2310155, 4158279, 6930465, 20791395]

約数ペア:

[(1, 20791395), (3, 6930465), (5, 4158279), (9, 2310155), (15, 1386093), (45, 462031), (491, 42345), (941, 22095), (1473, 14115), (2455, 8469), (2823, 7365), (4419, 4705)]