18864460

素因数分解:

$2^2\times 5^1\times {\mathrm{683}}^1\times {\mathrm{1381}}^1$

素因数の和:2073

約数の個数: 24

約数和(自身を含む): 39702096

約数和(自身を除く): 20837636

約数列:

[1, 2, 4, 5, 10, 20, 683, 1366, 1381, 2732, 2762, 3415, 5524, 6830, 6905, 13660, 13810, 27620, 943223, 1886446, 3772892, 4716115, 9432230, 18864460]

約数ペア:

[(1, 18864460), (2, 9432230), (4, 4716115), (5, 3772892), (10, 1886446), (20, 943223), (683, 27620), (1366, 13810), (1381, 13660), (2732, 6905), (2762, 6830), (3415, 5524)]