81816812

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1$

素因数の和:124

約数の個数: 144

約数和(自身を含む): 200202240

約数和(自身を除く): 118385428

約数列:

[1, 2, 4, 7, 11, 14, 19, 22, 28, 31, 38, 41, 44, 62, 76, 77, 82, 121, 124, 133, 154, 164, 209, 217, 242, 266, 287, 308, 341, 418, 434, 451, 484, 532, 574, 589, 682, 779, 836, 847, 868, 902, 1148, 1178, 1271, 1364, 1463, 1558, 1694, 1804, 2299, 2356, 2387, 2542, 2926, 3116, 3157, 3388, 3751, 4123, 4598, 4774, 4961, 5084, 5453, 5852, 6314, 6479, 7502, 8246, 8569, 8897, 9196, 9548, 9922, 10906, 12628, 12958, 13981, 15004, 16093, 16492, 17138, 17794, 19844, 21812, 24149, 25916, 26257, 27962, 32186, 34276, 34727, 35588, 45353, 48298, 52514, 55924, 59983, 64372, 69454, 71269, 90706, 94259, 96596, 97867, 105028, 119966, 138908, 142538, 153791, 169043, 181412, 188518, 195734, 239932, 265639, 285076, 307582, 338086, 377036, 391468, 498883, 531278, 615164, 659813, 676172, 997766, 1062556, 1076537, 1319626, 1859473, 1995532, 2153074, 2639252, 2922029, 3718946, 4306148, 5844058, 7437892, 11688116, 20454203, 40908406, 81816812]

約数ペア:

[(1, 81816812), (2, 40908406), (4, 20454203), (7, 11688116), (11, 7437892), (14, 5844058), (19, 4306148), (22, 3718946), (28, 2922029), (31, 2639252), (38, 2153074), (41, 1995532), (44, 1859473), (62, 1319626), (76, 1076537), (77, 1062556), (82, 997766), (121, 676172), (124, 659813), (133, 615164), (154, 531278), (164, 498883), (209, 391468), (217, 377036), (242, 338086), (266, 307582), (287, 285076), (308, 265639), (341, 239932), (418, 195734), (434, 188518), (451, 181412), (484, 169043), (532, 153791), (574, 142538), (589, 138908), (682, 119966), (779, 105028), (836, 97867), (847, 96596), (868, 94259), (902, 90706), (1148, 71269), (1178, 69454), (1271, 64372), (1364, 59983), (1463, 55924), (1558, 52514), (1694, 48298), (1804, 45353), (2299, 35588), (2356, 34727), (2387, 34276), (2542, 32186), (2926, 27962), (3116, 26257), (3157, 25916), (3388, 24149), (3751, 21812), (4123, 19844), (4598, 17794), (4774, 17138), (4961, 16492), (5084, 16093), (5453, 15004), (5852, 13981), (6314, 12958), (6479, 12628), (7502, 10906), (8246, 9922), (8569, 9548), (8897, 9196)]