51963280

素因数分解:

$2^4\times 5^1\times {\mathrm{649541}}^1$

素因数の和:649554

約数の個数: 20

約数和(自身を含む): 120814812

約数和(自身を除く): 68851532

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 649541, 1299082, 2598164, 3247705, 5196328, 6495410, 10392656, 12990820, 25981640, 51963280]

約数ペア:

[(1, 51963280), (2, 25981640), (4, 12990820), (5, 10392656), (8, 6495410), (10, 5196328), (16, 3247705), (20, 2598164), (40, 1299082), (80, 649541)]