81278890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{105557}}^1$

素因数の和:105582

約数の個数: 32

約数和(自身を含む): 182404224

約数和(自身を除く): 101125334

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 385, 770, 105557, 211114, 527785, 738899, 1055570, 1161127, 1477798, 2322254, 3694495, 5805635, 7388990, 8127889, 11611270, 16255778, 40639445, 81278890]

約数ペア:

[(1, 81278890), (2, 40639445), (5, 16255778), (7, 11611270), (10, 8127889), (11, 7388990), (14, 5805635), (22, 3694495), (35, 2322254), (55, 1477798), (70, 1161127), (77, 1055570), (110, 738899), (154, 527785), (385, 211114), (770, 105557)]