21239967

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53233}}^1$

素因数の和:53262

約数の個数: 16

約数和(自身を含む): 34069760

約数和(自身を除く): 12829793

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 53233, 159699, 372631, 1011427, 1117893, 3034281, 7079989, 21239967]

約数ペア:

[(1, 21239967), (3, 7079989), (7, 3034281), (19, 1117893), (21, 1011427), (57, 372631), (133, 159699), (399, 53233)]