31780520

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{27397}}^1$

素因数の和:27437

約数の個数: 32

約数和(自身を含む): 73974600

約数和(自身を除く): 42194080

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 27397, 54794, 109588, 136985, 219176, 273970, 547940, 794513, 1095880, 1589026, 3178052, 3972565, 6356104, 7945130, 15890260, 31780520]

約数ペア:

[(1, 31780520), (2, 15890260), (4, 7945130), (5, 6356104), (8, 3972565), (10, 3178052), (20, 1589026), (29, 1095880), (40, 794513), (58, 547940), (116, 273970), (145, 219176), (232, 136985), (290, 109588), (580, 54794), (1160, 27397)]