81062740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1$

素因数の和:134

約数の個数: 144

約数和(自身を含む): 206458560

約数和(自身を除く): 125395820

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 41, 43, 44, 55, 76, 82, 86, 95, 110, 121, 164, 172, 190, 205, 209, 215, 220, 242, 380, 410, 418, 430, 451, 473, 484, 605, 779, 817, 820, 836, 860, 902, 946, 1045, 1210, 1558, 1634, 1763, 1804, 1892, 2090, 2255, 2299, 2365, 2420, 3116, 3268, 3526, 3895, 4085, 4180, 4510, 4598, 4730, 4961, 5203, 7052, 7790, 8170, 8569, 8815, 8987, 9020, 9196, 9460, 9922, 10406, 11495, 15580, 16340, 17138, 17630, 17974, 19393, 19844, 20812, 22990, 24805, 26015, 33497, 34276, 35260, 35948, 38786, 42845, 44935, 45980, 49610, 52030, 66994, 77572, 85690, 89870, 94259, 96965, 98857, 99220, 104060, 133988, 167485, 171380, 179740, 188518, 193930, 197714, 213323, 334970, 368467, 377036, 387860, 395428, 426646, 471295, 494285, 669940, 736934, 853292, 942590, 988570, 1066615, 1473868, 1842335, 1885180, 1977140, 2133230, 3684670, 4053137, 4266460, 7369340, 8106274, 16212548, 20265685, 40531370, 81062740]

約数ペア:

[(1, 81062740), (2, 40531370), (4, 20265685), (5, 16212548), (10, 8106274), (11, 7369340), (19, 4266460), (20, 4053137), (22, 3684670), (38, 2133230), (41, 1977140), (43, 1885180), (44, 1842335), (55, 1473868), (76, 1066615), (82, 988570), (86, 942590), (95, 853292), (110, 736934), (121, 669940), (164, 494285), (172, 471295), (190, 426646), (205, 395428), (209, 387860), (215, 377036), (220, 368467), (242, 334970), (380, 213323), (410, 197714), (418, 193930), (430, 188518), (451, 179740), (473, 171380), (484, 167485), (605, 133988), (779, 104060), (817, 99220), (820, 98857), (836, 96965), (860, 94259), (902, 89870), (946, 85690), (1045, 77572), (1210, 66994), (1558, 52030), (1634, 49610), (1763, 45980), (1804, 44935), (1892, 42845), (2090, 38786), (2255, 35948), (2299, 35260), (2365, 34276), (2420, 33497), (3116, 26015), (3268, 24805), (3526, 22990), (3895, 20812), (4085, 19844), (4180, 19393), (4510, 17974), (4598, 17630), (4730, 17138), (4961, 16340), (5203, 15580), (7052, 11495), (7790, 10406), (8170, 9922), (8569, 9460), (8815, 9196), (8987, 9020)]