18007240

素因数分解:

$2^3\times 5^1\times {\mathrm{547}}^1\times {\mathrm{823}}^1$

素因数の和:1381

約数の個数: 32

約数和(自身を含む): 40639680

約数和(自身を除く): 22632440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 547, 823, 1094, 1646, 2188, 2735, 3292, 4115, 4376, 5470, 6584, 8230, 10940, 16460, 21880, 32920, 450181, 900362, 1800724, 2250905, 3601448, 4501810, 9003620, 18007240]

約数ペア:

[(1, 18007240), (2, 9003620), (4, 4501810), (5, 3601448), (8, 2250905), (10, 1800724), (20, 900362), (40, 450181), (547, 32920), (823, 21880), (1094, 16460), (1646, 10940), (2188, 8230), (2735, 6584), (3292, 5470), (4115, 4376)]