321690880

素因数分解:

$2^8\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{223}}^1$

素因数の和:281

約数の個数: 216

約数和(自身を含む): 939520512

約数和(自身を除く): 617829632

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, 128, 140, 160, 161, 184, 196, 223, 224, 230, 245, 256, 280, 320, 322, 368, 392, 446, 448, 460, 490, 560, 640, 644, 736, 784, 805, 892, 896, 920, 980, 1115, 1120, 1127, 1280, 1288, 1472, 1561, 1568, 1610, 1784, 1792, 1840, 1960, 2230, 2240, 2254, 2576, 2944, 3122, 3136, 3220, 3568, 3680, 3920, 4460, 4480, 4508, 5129, 5152, 5635, 5888, 6244, 6272, 6440, 7136, 7360, 7805, 7840, 8920, 8960, 9016, 10258, 10304, 10927, 11270, 12488, 12544, 12880, 14272, 14720, 15610, 15680, 17840, 18032, 20516, 20608, 21854, 22540, 24976, 25645, 25760, 28544, 29440, 31220, 31360, 35680, 35903, 36064, 41032, 41216, 43708, 45080, 49952, 51290, 51520, 54635, 57088, 62440, 62720, 71360, 71806, 72128, 82064, 87416, 90160, 99904, 102580, 103040, 109270, 124880, 142720, 143612, 144256, 164128, 174832, 179515, 180320, 199808, 205160, 206080, 218540, 249760, 251321, 285440, 287224, 288512, 328256, 349664, 359030, 360640, 399616, 410320, 437080, 499520, 502642, 574448, 656512, 699328, 718060, 721280, 820640, 874160, 999040, 1005284, 1148896, 1256605, 1313024, 1398656, 1436120, 1442560, 1641280, 1748320, 1998080, 2010568, 2297792, 2513210, 2797312, 2872240, 3282560, 3496640, 4021136, 4595584, 5026420, 5744480, 6565120, 6993280, 8042272, 9191168, 10052840, 11488960, 13986560, 16084544, 20105680, 22977920, 32169088, 40211360, 45955840, 64338176, 80422720, 160845440, 321690880]

約数ペア:

[(1, 321690880), (2, 160845440), (4, 80422720), (5, 64338176), (7, 45955840), (8, 40211360), (10, 32169088), (14, 22977920), (16, 20105680), (20, 16084544), (23, 13986560), (28, 11488960), (32, 10052840), (35, 9191168), (40, 8042272), (46, 6993280), (49, 6565120), (56, 5744480), (64, 5026420), (70, 4595584), (80, 4021136), (92, 3496640), (98, 3282560), (112, 2872240), (115, 2797312), (128, 2513210), (140, 2297792), (160, 2010568), (161, 1998080), (184, 1748320), (196, 1641280), (223, 1442560), (224, 1436120), (230, 1398656), (245, 1313024), (256, 1256605), (280, 1148896), (320, 1005284), (322, 999040), (368, 874160), (392, 820640), (446, 721280), (448, 718060), (460, 699328), (490, 656512), (560, 574448), (640, 502642), (644, 499520), (736, 437080), (784, 410320), (805, 399616), (892, 360640), (896, 359030), (920, 349664), (980, 328256), (1115, 288512), (1120, 287224), (1127, 285440), (1280, 251321), (1288, 249760), (1472, 218540), (1561, 206080), (1568, 205160), (1610, 199808), (1784, 180320), (1792, 179515), (1840, 174832), (1960, 164128), (2230, 144256), (2240, 143612), (2254, 142720), (2576, 124880), (2944, 109270), (3122, 103040), (3136, 102580), (3220, 99904), (3568, 90160), (3680, 87416), (3920, 82064), (4460, 72128), (4480, 71806), (4508, 71360), (5129, 62720), (5152, 62440), (5635, 57088), (5888, 54635), (6244, 51520), (6272, 51290), (6440, 49952), (7136, 45080), (7360, 43708), (7805, 41216), (7840, 41032), (8920, 36064), (8960, 35903), (9016, 35680), (10258, 31360), (10304, 31220), (10927, 29440), (11270, 28544), (12488, 25760), (12544, 25645), (12880, 24976), (14272, 22540), (14720, 21854), (15610, 20608), (15680, 20516), (17840, 18032)]