18030520

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{4463}}^1$

素因数の和:4575

約数の個数: 32

約数和(自身を含む): 40979520

約数和(自身を除く): 22949000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 4463, 8926, 17852, 22315, 35704, 44630, 89260, 178520, 450763, 901526, 1803052, 2253815, 3606104, 4507630, 9015260, 18030520]

約数ペア:

[(1, 18030520), (2, 9015260), (4, 4507630), (5, 3606104), (8, 2253815), (10, 1803052), (20, 901526), (40, 450763), (101, 178520), (202, 89260), (404, 44630), (505, 35704), (808, 22315), (1010, 17852), (2020, 8926), (4040, 4463)]