21140676

素因数分解:

$2^2\times 3^4\times {\mathrm{71}}^1\times {\mathrm{919}}^1$

素因数の和:1006

約数の個数: 60

約数和(自身を含む): 56105280

約数和(自身を除く): 34964604

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 71, 81, 108, 142, 162, 213, 284, 324, 426, 639, 852, 919, 1278, 1838, 1917, 2556, 2757, 3676, 3834, 5514, 5751, 7668, 8271, 11028, 11502, 16542, 23004, 24813, 33084, 49626, 65249, 74439, 99252, 130498, 148878, 195747, 260996, 297756, 391494, 587241, 782988, 1174482, 1761723, 2348964, 3523446, 5285169, 7046892, 10570338, 21140676]

約数ペア:

[(1, 21140676), (2, 10570338), (3, 7046892), (4, 5285169), (6, 3523446), (9, 2348964), (12, 1761723), (18, 1174482), (27, 782988), (36, 587241), (54, 391494), (71, 297756), (81, 260996), (108, 195747), (142, 148878), (162, 130498), (213, 99252), (284, 74439), (324, 65249), (426, 49626), (639, 33084), (852, 24813), (919, 23004), (1278, 16542), (1838, 11502), (1917, 11028), (2556, 8271), (2757, 7668), (3676, 5751), (3834, 5514)]