21898209

素因数分解:

$3^1\times {\mathrm{109}}^1\times {\mathrm{167}}^1\times {\mathrm{401}}^1$

素因数の和:680

約数の個数: 16

約数和(自身を含む): 29715840

約数和(自身を除く): 7817631

約数列:

[1, 3, 109, 167, 327, 401, 501, 1203, 18203, 43709, 54609, 66967, 131127, 200901, 7299403, 21898209]

約数ペア:

[(1, 21898209), (3, 7299403), (109, 200901), (167, 131127), (327, 66967), (401, 54609), (501, 43709), (1203, 18203)]