80690720

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{127}}^1$

素因数の和:191

約数の個数: 144

約数和(自身を含む): 221211648

約数和(自身を除く): 140520928

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 32, 38, 40, 44, 55, 76, 80, 88, 95, 110, 127, 152, 160, 176, 190, 209, 220, 254, 304, 352, 361, 380, 418, 440, 508, 608, 635, 722, 760, 836, 880, 1016, 1045, 1270, 1397, 1444, 1520, 1672, 1760, 1805, 2032, 2090, 2413, 2540, 2794, 2888, 3040, 3344, 3610, 3971, 4064, 4180, 4826, 5080, 5588, 5776, 6688, 6985, 7220, 7942, 8360, 9652, 10160, 11176, 11552, 12065, 13970, 14440, 15884, 16720, 19304, 19855, 20320, 22352, 24130, 26543, 27940, 28880, 31768, 33440, 38608, 39710, 44704, 45847, 48260, 53086, 55880, 57760, 63536, 77216, 79420, 91694, 96520, 106172, 111760, 127072, 132715, 158840, 183388, 193040, 212344, 223520, 229235, 265430, 317680, 366776, 386080, 424688, 458470, 504317, 530860, 635360, 733552, 849376, 916940, 1008634, 1061720, 1467104, 1833880, 2017268, 2123440, 2521585, 3667760, 4034536, 4246880, 5043170, 7335520, 8069072, 10086340, 16138144, 20172680, 40345360, 80690720]

約数ペア:

[(1, 80690720), (2, 40345360), (4, 20172680), (5, 16138144), (8, 10086340), (10, 8069072), (11, 7335520), (16, 5043170), (19, 4246880), (20, 4034536), (22, 3667760), (32, 2521585), (38, 2123440), (40, 2017268), (44, 1833880), (55, 1467104), (76, 1061720), (80, 1008634), (88, 916940), (95, 849376), (110, 733552), (127, 635360), (152, 530860), (160, 504317), (176, 458470), (190, 424688), (209, 386080), (220, 366776), (254, 317680), (304, 265430), (352, 229235), (361, 223520), (380, 212344), (418, 193040), (440, 183388), (508, 158840), (608, 132715), (635, 127072), (722, 111760), (760, 106172), (836, 96520), (880, 91694), (1016, 79420), (1045, 77216), (1270, 63536), (1397, 57760), (1444, 55880), (1520, 53086), (1672, 48260), (1760, 45847), (1805, 44704), (2032, 39710), (2090, 38608), (2413, 33440), (2540, 31768), (2794, 28880), (2888, 27940), (3040, 26543), (3344, 24130), (3610, 22352), (3971, 20320), (4064, 19855), (4180, 19304), (4826, 16720), (5080, 15884), (5588, 14440), (5776, 13970), (6688, 12065), (6985, 11552), (7220, 11176), (7942, 10160), (8360, 9652)]