21301254

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:166

約数の個数: 96

約数和(自身を含む): 53333280

約数和(自身を除く): 32032026

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 29, 39, 43, 58, 73, 78, 86, 87, 117, 129, 146, 174, 219, 234, 258, 261, 377, 387, 438, 522, 559, 657, 754, 774, 949, 1118, 1131, 1247, 1314, 1677, 1898, 2117, 2262, 2494, 2847, 3139, 3354, 3393, 3741, 4234, 5031, 5694, 6278, 6351, 6786, 7482, 8541, 9417, 10062, 11223, 12702, 16211, 17082, 18834, 19053, 22446, 27521, 28251, 32422, 38106, 40807, 48633, 55042, 56502, 81614, 82563, 91031, 97266, 122421, 145899, 165126, 182062, 244842, 247689, 273093, 291798, 367263, 495378, 546186, 734526, 819279, 1183403, 1638558, 2366806, 3550209, 7100418, 10650627, 21301254]

約数ペア:

[(1, 21301254), (2, 10650627), (3, 7100418), (6, 3550209), (9, 2366806), (13, 1638558), (18, 1183403), (26, 819279), (29, 734526), (39, 546186), (43, 495378), (58, 367263), (73, 291798), (78, 273093), (86, 247689), (87, 244842), (117, 182062), (129, 165126), (146, 145899), (174, 122421), (219, 97266), (234, 91031), (258, 82563), (261, 81614), (377, 56502), (387, 55042), (438, 48633), (522, 40807), (559, 38106), (657, 32422), (754, 28251), (774, 27521), (949, 22446), (1118, 19053), (1131, 18834), (1247, 17082), (1314, 16211), (1677, 12702), (1898, 11223), (2117, 10062), (2262, 9417), (2494, 8541), (2847, 7482), (3139, 6786), (3354, 6351), (3393, 6278), (3741, 5694), (4234, 5031)]