21099805

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{6709}}^1$

素因数の和:6768

約数の個数: 16

約数和(自身を含む): 27537840

約数和(自身を除く): 6438035

約数列:

[1, 5, 17, 37, 85, 185, 629, 3145, 6709, 33545, 114053, 248233, 570265, 1241165, 4219961, 21099805]

約数ペア:

[(1, 21099805), (5, 4219961), (17, 1241165), (37, 570265), (85, 248233), (185, 114053), (629, 33545), (3145, 6709)]