18889160

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{2609}}^1$

素因数の和:2801

約数の個数: 32

約数和(自身を含む): 42751800

約数和(自身を除く): 23862640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 724, 905, 1448, 1810, 2609, 3620, 5218, 7240, 10436, 13045, 20872, 26090, 52180, 104360, 472229, 944458, 1888916, 2361145, 3777832, 4722290, 9444580, 18889160]

約数ペア:

[(1, 18889160), (2, 9444580), (4, 4722290), (5, 3777832), (8, 2361145), (10, 1888916), (20, 944458), (40, 472229), (181, 104360), (362, 52180), (724, 26090), (905, 20872), (1448, 13045), (1810, 10436), (2609, 7240), (3620, 5218)]