21345495

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61871}}^1$

素因数の和:61902

約数の個数: 16

約数和(自身を含む): 35638272

約数和(自身を除く): 14292777

約数列:

[1, 3, 5, 15, 23, 69, 115, 345, 61871, 185613, 309355, 928065, 1423033, 4269099, 7115165, 21345495]

約数ペア:

[(1, 21345495), (3, 7115165), (5, 4269099), (15, 1423033), (23, 928065), (69, 309355), (115, 185613), (345, 61871)]