68899990

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{63211}}^1$

素因数の和:63327

約数の個数: 16

約数和(自身を含む): 125159760

約数和(自身を除く): 56259770

約数列:

[1, 2, 5, 10, 109, 218, 545, 1090, 63211, 126422, 316055, 632110, 6889999, 13779998, 34449995, 68899990]

約数ペア:

[(1, 68899990), (2, 34449995), (5, 13779998), (10, 6889999), (109, 632110), (218, 316055), (545, 126422), (1090, 63211)]