19981060

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{90823}}^1$

素因数の和:90843

約数の個数: 24

約数和(自身を含む): 45775296

約数和(自身を除く): 25794236

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 90823, 181646, 363292, 454115, 908230, 999053, 1816460, 1998106, 3996212, 4995265, 9990530, 19981060]

約数ペア:

[(1, 19981060), (2, 9990530), (4, 4995265), (5, 3996212), (10, 1998106), (11, 1816460), (20, 999053), (22, 908230), (44, 454115), (55, 363292), (110, 181646), (220, 90823)]