16815280

素因数分解:

$2^4\times 5^1\times {\mathrm{210191}}^1$

素因数の和:210204

約数の個数: 20

約数和(自身を含む): 39095712

約数和(自身を除く): 22280432

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 210191, 420382, 840764, 1050955, 1681528, 2101910, 3363056, 4203820, 8407640, 16815280]

約数ペア:

[(1, 16815280), (2, 8407640), (4, 4203820), (5, 3363056), (8, 2101910), (10, 1681528), (16, 1050955), (20, 840764), (40, 420382), (80, 210191)]