81488440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{73}}^1$

素因数の和:197

約数の個数: 128

約数和(自身を含む): 210988800

約数和(自身を除く): 129500360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 43, 44, 55, 59, 73, 86, 88, 110, 118, 146, 172, 215, 220, 236, 292, 295, 344, 365, 430, 440, 472, 473, 584, 590, 649, 730, 803, 860, 946, 1180, 1298, 1460, 1606, 1720, 1892, 2360, 2365, 2537, 2596, 2920, 3139, 3212, 3245, 3784, 4015, 4307, 4730, 5074, 5192, 6278, 6424, 6490, 8030, 8614, 9460, 10148, 12556, 12685, 12980, 15695, 16060, 17228, 18920, 20296, 21535, 25112, 25370, 25960, 27907, 31390, 32120, 34456, 34529, 43070, 47377, 50740, 55814, 62780, 69058, 86140, 94754, 101480, 111628, 125560, 138116, 139535, 172280, 172645, 185201, 189508, 223256, 236885, 276232, 279070, 345290, 370402, 379016, 473770, 558140, 690580, 740804, 926005, 947540, 1116280, 1381160, 1481608, 1852010, 1895080, 2037211, 3704020, 4074422, 7408040, 8148844, 10186055, 16297688, 20372110, 40744220, 81488440]

約数ペア:

[(1, 81488440), (2, 40744220), (4, 20372110), (5, 16297688), (8, 10186055), (10, 8148844), (11, 7408040), (20, 4074422), (22, 3704020), (40, 2037211), (43, 1895080), (44, 1852010), (55, 1481608), (59, 1381160), (73, 1116280), (86, 947540), (88, 926005), (110, 740804), (118, 690580), (146, 558140), (172, 473770), (215, 379016), (220, 370402), (236, 345290), (292, 279070), (295, 276232), (344, 236885), (365, 223256), (430, 189508), (440, 185201), (472, 172645), (473, 172280), (584, 139535), (590, 138116), (649, 125560), (730, 111628), (803, 101480), (860, 94754), (946, 86140), (1180, 69058), (1298, 62780), (1460, 55814), (1606, 50740), (1720, 47377), (1892, 43070), (2360, 34529), (2365, 34456), (2537, 32120), (2596, 31390), (2920, 27907), (3139, 25960), (3212, 25370), (3245, 25112), (3784, 21535), (4015, 20296), (4307, 18920), (4730, 17228), (5074, 16060), (5192, 15695), (6278, 12980), (6424, 12685), (6490, 12556), (8030, 10148), (8614, 9460)]