80422720

素因数分解:

$2^6\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{223}}^1$

素因数の和:277

約数の個数: 168

約数和(自身を含む): 233501184

約数和(自身を除く): 153078464

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 32, 35, 40, 46, 49, 56, 64, 70, 80, 92, 98, 112, 115, 140, 160, 161, 184, 196, 223, 224, 230, 245, 280, 320, 322, 368, 392, 446, 448, 460, 490, 560, 644, 736, 784, 805, 892, 920, 980, 1115, 1120, 1127, 1288, 1472, 1561, 1568, 1610, 1784, 1840, 1960, 2230, 2240, 2254, 2576, 3122, 3136, 3220, 3568, 3680, 3920, 4460, 4508, 5129, 5152, 5635, 6244, 6440, 7136, 7360, 7805, 7840, 8920, 9016, 10258, 10304, 10927, 11270, 12488, 12880, 14272, 15610, 15680, 17840, 18032, 20516, 21854, 22540, 24976, 25645, 25760, 31220, 35680, 35903, 36064, 41032, 43708, 45080, 49952, 51290, 51520, 54635, 62440, 71360, 71806, 72128, 82064, 87416, 90160, 99904, 102580, 109270, 124880, 143612, 164128, 174832, 179515, 180320, 205160, 218540, 249760, 251321, 287224, 328256, 349664, 359030, 360640, 410320, 437080, 499520, 502642, 574448, 699328, 718060, 820640, 874160, 1005284, 1148896, 1256605, 1436120, 1641280, 1748320, 2010568, 2297792, 2513210, 2872240, 3496640, 4021136, 5026420, 5744480, 8042272, 10052840, 11488960, 16084544, 20105680, 40211360, 80422720]

約数ペア:

[(1, 80422720), (2, 40211360), (4, 20105680), (5, 16084544), (7, 11488960), (8, 10052840), (10, 8042272), (14, 5744480), (16, 5026420), (20, 4021136), (23, 3496640), (28, 2872240), (32, 2513210), (35, 2297792), (40, 2010568), (46, 1748320), (49, 1641280), (56, 1436120), (64, 1256605), (70, 1148896), (80, 1005284), (92, 874160), (98, 820640), (112, 718060), (115, 699328), (140, 574448), (160, 502642), (161, 499520), (184, 437080), (196, 410320), (223, 360640), (224, 359030), (230, 349664), (245, 328256), (280, 287224), (320, 251321), (322, 249760), (368, 218540), (392, 205160), (446, 180320), (448, 179515), (460, 174832), (490, 164128), (560, 143612), (644, 124880), (736, 109270), (784, 102580), (805, 99904), (892, 90160), (920, 87416), (980, 82064), (1115, 72128), (1120, 71806), (1127, 71360), (1288, 62440), (1472, 54635), (1561, 51520), (1568, 51290), (1610, 49952), (1784, 45080), (1840, 43708), (1960, 41032), (2230, 36064), (2240, 35903), (2254, 35680), (2576, 31220), (3122, 25760), (3136, 25645), (3220, 24976), (3568, 22540), (3680, 21854), (3920, 20516), (4460, 18032), (4508, 17840), (5129, 15680), (5152, 15610), (5635, 14272), (6244, 12880), (6440, 12488), (7136, 11270), (7360, 10927), (7805, 10304), (7840, 10258), (8920, 9016)]