25563280

素因数分解:

$2^4\times 5^1\times {\mathrm{319541}}^1$

素因数の和:319554

約数の個数: 20

約数和(自身を含む): 59434812

約数和(自身を除く): 33871532

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 319541, 639082, 1278164, 1597705, 2556328, 3195410, 5112656, 6390820, 12781640, 25563280]

約数ペア:

[(1, 25563280), (2, 12781640), (4, 6390820), (5, 5112656), (8, 3195410), (10, 2556328), (16, 1597705), (20, 1278164), (40, 639082), (80, 319541)]