81934270

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{199}}^1$

素因数の和:433

約数の個数: 64

約数和(自身を含む): 171072000

約数和(自身を除く): 89137730

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 95, 110, 190, 197, 199, 209, 394, 398, 418, 985, 995, 1045, 1970, 1990, 2090, 2167, 2189, 3743, 3781, 4334, 4378, 7486, 7562, 10835, 10945, 18715, 18905, 21670, 21890, 37430, 37810, 39203, 41173, 41591, 78406, 82346, 83182, 196015, 205865, 207955, 392030, 411730, 415910, 431233, 744857, 862466, 1489714, 2156165, 3724285, 4312330, 7448570, 8193427, 16386854, 40967135, 81934270]

約数ペア:

[(1, 81934270), (2, 40967135), (5, 16386854), (10, 8193427), (11, 7448570), (19, 4312330), (22, 3724285), (38, 2156165), (55, 1489714), (95, 862466), (110, 744857), (190, 431233), (197, 415910), (199, 411730), (209, 392030), (394, 207955), (398, 205865), (418, 196015), (985, 83182), (995, 82346), (1045, 78406), (1970, 41591), (1990, 41173), (2090, 39203), (2167, 37810), (2189, 37430), (3743, 21890), (3781, 21670), (4334, 18905), (4378, 18715), (7486, 10945), (7562, 10835)]