20168872220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{42409}}^1$

素因数の和:42547

約数の個数: 96

約数和(自身を含む): 50159155200

約数和(自身を除く): 29990282980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 70, 79, 86, 140, 158, 172, 215, 301, 316, 395, 430, 553, 602, 790, 860, 1106, 1204, 1505, 1580, 2212, 2765, 3010, 3397, 5530, 6020, 6794, 11060, 13588, 16985, 23779, 33970, 42409, 47558, 67940, 84818, 95116, 118895, 169636, 212045, 237790, 296863, 424090, 475580, 593726, 848180, 1187452, 1484315, 1823587, 2968630, 3350311, 3647174, 5937260, 6700622, 7294348, 9117935, 12765109, 13401244, 16751555, 18235870, 23452177, 25530218, 33503110, 36471740, 46904354, 51060436, 63825545, 67006220, 93808708, 117260885, 127651090, 144063373, 234521770, 255302180, 288126746, 469043540, 576253492, 720316865, 1008443611, 1440633730, 2016887222, 2881267460, 4033774444, 5042218055, 10084436110, 20168872220]

約数ペア:

[(1, 20168872220), (2, 10084436110), (4, 5042218055), (5, 4033774444), (7, 2881267460), (10, 2016887222), (14, 1440633730), (20, 1008443611), (28, 720316865), (35, 576253492), (43, 469043540), (70, 288126746), (79, 255302180), (86, 234521770), (140, 144063373), (158, 127651090), (172, 117260885), (215, 93808708), (301, 67006220), (316, 63825545), (395, 51060436), (430, 46904354), (553, 36471740), (602, 33503110), (790, 25530218), (860, 23452177), (1106, 18235870), (1204, 16751555), (1505, 13401244), (1580, 12765109), (2212, 9117935), (2765, 7294348), (3010, 6700622), (3397, 5937260), (5530, 3647174), (6020, 3350311), (6794, 2968630), (11060, 1823587), (13588, 1484315), (16985, 1187452), (23779, 848180), (33970, 593726), (42409, 475580), (47558, 424090), (67940, 296863), (84818, 237790), (95116, 212045), (118895, 169636)]