7902290

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{199}}^1$

素因数の和:255

約数の個数: 48

約数和(自身を含む): 16459200

約数和(自身を除く): 8556910

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 95, 110, 190, 199, 209, 361, 398, 418, 722, 995, 1045, 1805, 1990, 2090, 2189, 3610, 3781, 3971, 4378, 7562, 7942, 10945, 18905, 19855, 21890, 37810, 39710, 41591, 71839, 83182, 143678, 207955, 359195, 415910, 718390, 790229, 1580458, 3951145, 7902290]

約数ペア:

[(1, 7902290), (2, 3951145), (5, 1580458), (10, 790229), (11, 718390), (19, 415910), (22, 359195), (38, 207955), (55, 143678), (95, 83182), (110, 71839), (190, 41591), (199, 39710), (209, 37810), (361, 21890), (398, 19855), (418, 18905), (722, 10945), (995, 7942), (1045, 7562), (1805, 4378), (1990, 3971), (2090, 3781), (2189, 3610)]