78804080

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{337}}^1$

素因数の和:466

約数の個数: 80

約数和(自身を含む): 191118720

約数和(自身を除く): 112314640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 79, 80, 148, 158, 185, 296, 316, 337, 370, 395, 592, 632, 674, 740, 790, 1264, 1348, 1480, 1580, 1685, 2696, 2923, 2960, 3160, 3370, 5392, 5846, 6320, 6740, 11692, 12469, 13480, 14615, 23384, 24938, 26623, 26960, 29230, 46768, 49876, 53246, 58460, 62345, 99752, 106492, 116920, 124690, 133115, 199504, 212984, 233840, 249380, 266230, 425968, 498760, 532460, 985051, 997520, 1064920, 1970102, 2129840, 3940204, 4925255, 7880408, 9850510, 15760816, 19701020, 39402040, 78804080]

約数ペア:

[(1, 78804080), (2, 39402040), (4, 19701020), (5, 15760816), (8, 9850510), (10, 7880408), (16, 4925255), (20, 3940204), (37, 2129840), (40, 1970102), (74, 1064920), (79, 997520), (80, 985051), (148, 532460), (158, 498760), (185, 425968), (296, 266230), (316, 249380), (337, 233840), (370, 212984), (395, 199504), (592, 133115), (632, 124690), (674, 116920), (740, 106492), (790, 99752), (1264, 62345), (1348, 58460), (1480, 53246), (1580, 49876), (1685, 46768), (2696, 29230), (2923, 26960), (2960, 26623), (3160, 24938), (3370, 23384), (5392, 14615), (5846, 13480), (6320, 12469), (6740, 11692)]