18388503

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4111}}^1$

素因数の和:4195

約数の個数: 24

約数和(自身を含む): 30790656

約数和(自身を除く): 12402153

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4111, 4473, 12333, 28777, 36999, 86331, 258993, 291881, 875643, 2043167, 2626929, 6129501, 18388503]

約数ペア:

[(1, 18388503), (3, 6129501), (7, 2626929), (9, 2043167), (21, 875643), (63, 291881), (71, 258993), (213, 86331), (497, 36999), (639, 28777), (1491, 12333), (4111, 4473)]