21924040

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{1409}}^1$

素因数の和:1809

約数の個数: 32

約数和(自身を含む): 49491000

約数和(自身を除く): 27566960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 1409, 1556, 1945, 2818, 3112, 3890, 5636, 7045, 7780, 11272, 14090, 15560, 28180, 56360, 548101, 1096202, 2192404, 2740505, 4384808, 5481010, 10962020, 21924040]

約数ペア:

[(1, 21924040), (2, 10962020), (4, 5481010), (5, 4384808), (8, 2740505), (10, 2192404), (20, 1096202), (40, 548101), (389, 56360), (778, 28180), (1409, 15560), (1556, 14090), (1945, 11272), (2818, 7780), (3112, 7045), (3890, 5636)]