18986220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{223}}^1$

素因数の和:292

約数の個数: 144

約数和(自身を含む): 64576512

約数和(自身を除く): 45590292

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 43, 44, 45, 55, 60, 66, 86, 90, 99, 110, 129, 132, 165, 172, 180, 198, 215, 220, 223, 258, 330, 387, 396, 430, 446, 473, 495, 516, 645, 660, 669, 774, 860, 892, 946, 990, 1115, 1290, 1338, 1419, 1548, 1892, 1935, 1980, 2007, 2230, 2365, 2453, 2580, 2676, 2838, 3345, 3870, 4014, 4257, 4460, 4730, 4906, 5676, 6690, 7095, 7359, 7740, 8028, 8514, 9460, 9589, 9812, 10035, 12265, 13380, 14190, 14718, 17028, 19178, 20070, 21285, 22077, 24530, 28380, 28767, 29436, 36795, 38356, 40140, 42570, 44154, 47945, 49060, 57534, 73590, 85140, 86301, 88308, 95890, 105479, 110385, 115068, 143835, 147180, 172602, 191780, 210958, 220770, 287670, 316437, 345204, 421916, 431505, 441540, 527395, 575340, 632874, 863010, 949311, 1054790, 1265748, 1582185, 1726020, 1898622, 2109580, 3164370, 3797244, 4746555, 6328740, 9493110, 18986220]

約数ペア:

[(1, 18986220), (2, 9493110), (3, 6328740), (4, 4746555), (5, 3797244), (6, 3164370), (9, 2109580), (10, 1898622), (11, 1726020), (12, 1582185), (15, 1265748), (18, 1054790), (20, 949311), (22, 863010), (30, 632874), (33, 575340), (36, 527395), (43, 441540), (44, 431505), (45, 421916), (55, 345204), (60, 316437), (66, 287670), (86, 220770), (90, 210958), (99, 191780), (110, 172602), (129, 147180), (132, 143835), (165, 115068), (172, 110385), (180, 105479), (198, 95890), (215, 88308), (220, 86301), (223, 85140), (258, 73590), (330, 57534), (387, 49060), (396, 47945), (430, 44154), (446, 42570), (473, 40140), (495, 38356), (516, 36795), (645, 29436), (660, 28767), (669, 28380), (774, 24530), (860, 22077), (892, 21285), (946, 20070), (990, 19178), (1115, 17028), (1290, 14718), (1338, 14190), (1419, 13380), (1548, 12265), (1892, 10035), (1935, 9812), (1980, 9589), (2007, 9460), (2230, 8514), (2365, 8028), (2453, 7740), (2580, 7359), (2676, 7095), (2838, 6690), (3345, 5676), (3870, 4906), (4014, 4730), (4257, 4460)]