18786520

素因数分解:

$2^3\times 5^1\times {\mathrm{227}}^1\times {\mathrm{2069}}^1$

素因数の和:2307

約数の個数: 32

約数和(自身を含む): 42476400

約数和(自身を除く): 23689880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 227, 454, 908, 1135, 1816, 2069, 2270, 4138, 4540, 8276, 9080, 10345, 16552, 20690, 41380, 82760, 469663, 939326, 1878652, 2348315, 3757304, 4696630, 9393260, 18786520]

約数ペア:

[(1, 18786520), (2, 9393260), (4, 4696630), (5, 3757304), (8, 2348315), (10, 1878652), (20, 939326), (40, 469663), (227, 82760), (454, 41380), (908, 20690), (1135, 16552), (1816, 10345), (2069, 9080), (2270, 8276), (4138, 4540)]