21044412

素因数分解:

$2^2\times 3^2\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{173}}^1$

素因数の和:323

約数の個数: 72

約数和(自身を含む): 55735680

約数和(自身を除く): 34691268

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 31, 36, 62, 93, 109, 124, 173, 186, 218, 279, 327, 346, 372, 436, 519, 558, 654, 692, 981, 1038, 1116, 1308, 1557, 1962, 2076, 3114, 3379, 3924, 5363, 6228, 6758, 10137, 10726, 13516, 16089, 18857, 20274, 21452, 30411, 32178, 37714, 40548, 48267, 56571, 60822, 64356, 75428, 96534, 113142, 121644, 169713, 193068, 226284, 339426, 584567, 678852, 1169134, 1753701, 2338268, 3507402, 5261103, 7014804, 10522206, 21044412]

約数ペア:

[(1, 21044412), (2, 10522206), (3, 7014804), (4, 5261103), (6, 3507402), (9, 2338268), (12, 1753701), (18, 1169134), (31, 678852), (36, 584567), (62, 339426), (93, 226284), (109, 193068), (124, 169713), (173, 121644), (186, 113142), (218, 96534), (279, 75428), (327, 64356), (346, 60822), (372, 56571), (436, 48267), (519, 40548), (558, 37714), (654, 32178), (692, 30411), (981, 21452), (1038, 20274), (1116, 18857), (1308, 16089), (1557, 13516), (1962, 10726), (2076, 10137), (3114, 6758), (3379, 6228), (3924, 5363)]