85012720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1901}}^1$

素因数の和:1970

約数の個数: 80

約数和(自身を含む): 217923552

約数和(自身を除く): 132910832

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 43, 52, 65, 80, 86, 104, 130, 172, 208, 215, 260, 344, 430, 520, 559, 688, 860, 1040, 1118, 1720, 1901, 2236, 2795, 3440, 3802, 4472, 5590, 7604, 8944, 9505, 11180, 15208, 19010, 22360, 24713, 30416, 38020, 44720, 49426, 76040, 81743, 98852, 123565, 152080, 163486, 197704, 247130, 326972, 395408, 408715, 494260, 653944, 817430, 988520, 1062659, 1307888, 1634860, 1977040, 2125318, 3269720, 4250636, 5313295, 6539440, 8501272, 10626590, 17002544, 21253180, 42506360, 85012720]

約数ペア:

[(1, 85012720), (2, 42506360), (4, 21253180), (5, 17002544), (8, 10626590), (10, 8501272), (13, 6539440), (16, 5313295), (20, 4250636), (26, 3269720), (40, 2125318), (43, 1977040), (52, 1634860), (65, 1307888), (80, 1062659), (86, 988520), (104, 817430), (130, 653944), (172, 494260), (208, 408715), (215, 395408), (260, 326972), (344, 247130), (430, 197704), (520, 163486), (559, 152080), (688, 123565), (860, 98852), (1040, 81743), (1118, 76040), (1720, 49426), (1901, 44720), (2236, 38020), (2795, 30416), (3440, 24713), (3802, 22360), (4472, 19010), (5590, 15208), (7604, 11180), (8944, 9505)]