1817380

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1021}}^1$

素因数の和:1119

約数の個数: 24

約数和(自身を含む): 3863160

約数和(自身を除く): 2045780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1021, 1780, 2042, 4084, 5105, 10210, 20420, 90869, 181738, 363476, 454345, 908690, 1817380]

約数ペア:

[(1, 1817380), (2, 908690), (4, 454345), (5, 363476), (10, 181738), (20, 90869), (89, 20420), (178, 10210), (356, 5105), (445, 4084), (890, 2042), (1021, 1780)]