28451440

素因数分解:

$2^4\times 5^1\times {\mathrm{355643}}^1$

素因数の和:355656

約数の個数: 20

約数和(自身を含む): 66149784

約数和(自身を除く): 37698344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 355643, 711286, 1422572, 1778215, 2845144, 3556430, 5690288, 7112860, 14225720, 28451440]

約数ペア:

[(1, 28451440), (2, 14225720), (4, 7112860), (5, 5690288), (8, 3556430), (10, 2845144), (16, 1778215), (20, 1422572), (40, 711286), (80, 355643)]