20990118

素因数分解:

$2^1\times 3^1\times {\mathrm{877}}^1\times {\mathrm{3989}}^1$

素因数の和:4871

約数の個数: 16

約数和(自身を含む): 42038640

約数和(自身を除く): 21048522

約数列:

[1, 2, 3, 6, 877, 1754, 2631, 3989, 5262, 7978, 11967, 23934, 3498353, 6996706, 10495059, 20990118]

約数ペア:

[(1, 20990118), (2, 10495059), (3, 6996706), (6, 3498353), (877, 23934), (1754, 11967), (2631, 7978), (3989, 5262)]