18128020

素因数分解:

$2^2\times 5^1\times {\mathrm{241}}^1\times {\mathrm{3761}}^1$

素因数の和:4011

約数の個数: 24

約数和(自身を含む): 38236968

約数和(自身を除く): 20108948

約数列:

[1, 2, 4, 5, 10, 20, 241, 482, 964, 1205, 2410, 3761, 4820, 7522, 15044, 18805, 37610, 75220, 906401, 1812802, 3625604, 4532005, 9064010, 18128020]

約数ペア:

[(1, 18128020), (2, 9064010), (4, 4532005), (5, 3625604), (10, 1812802), (20, 906401), (241, 75220), (482, 37610), (964, 18805), (1205, 15044), (2410, 7522), (3761, 4820)]