518819440

素因数分解:

$2^4\times 5^1\times {\mathrm{6485243}}^1$

素因数の和:6485256

約数の個数: 20

約数和(自身を含む): 1206255384

約数和(自身を除く): 687435944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 6485243, 12970486, 25940972, 32426215, 51881944, 64852430, 103763888, 129704860, 259409720, 518819440]

約数ペア:

[(1, 518819440), (2, 259409720), (4, 129704860), (5, 103763888), (8, 64852430), (10, 51881944), (16, 32426215), (20, 25940972), (40, 12970486), (80, 6485243)]