21007760

素因数分解:

$2^4\times 5^1\times {\mathrm{262597}}^1$

素因数の和:262610

約数の個数: 20

約数和(自身を含む): 48843228

約数和(自身を除く): 27835468

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 262597, 525194, 1050388, 1312985, 2100776, 2625970, 4201552, 5251940, 10503880, 21007760]

約数ペア:

[(1, 21007760), (2, 10503880), (4, 5251940), (5, 4201552), (8, 2625970), (10, 2100776), (16, 1312985), (20, 1050388), (40, 525194), (80, 262597)]