81640746

素因数分解:

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

素因数の和:328

約数の個数: 72

約数和(自身を含む): 198446976

約数和(自身を除く): 116806230

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 33, 43, 66, 86, 99, 129, 198, 223, 258, 387, 446, 473, 669, 774, 946, 1338, 1419, 1849, 2007, 2453, 2838, 3698, 4014, 4257, 4906, 5547, 7359, 8514, 9589, 11094, 14718, 16641, 19178, 20339, 22077, 28767, 33282, 40678, 44154, 57534, 61017, 86301, 105479, 122034, 172602, 183051, 210958, 316437, 366102, 412327, 632874, 824654, 949311, 1236981, 1898622, 2473962, 3710943, 4535597, 7421886, 9071194, 13606791, 27213582, 40820373, 81640746]

約数ペア:

[(1, 81640746), (2, 40820373), (3, 27213582), (6, 13606791), (9, 9071194), (11, 7421886), (18, 4535597), (22, 3710943), (33, 2473962), (43, 1898622), (66, 1236981), (86, 949311), (99, 824654), (129, 632874), (198, 412327), (223, 366102), (258, 316437), (387, 210958), (446, 183051), (473, 172602), (669, 122034), (774, 105479), (946, 86301), (1338, 61017), (1419, 57534), (1849, 44154), (2007, 40678), (2453, 33282), (2838, 28767), (3698, 22077), (4014, 20339), (4257, 19178), (4906, 16641), (5547, 14718), (7359, 11094), (8514, 9589)]