21191992

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{1303}}^1$

素因数の和:1435

約数の個数: 32

約数和(自身を含む): 42249600

約数和(自身を除く): 21057608

約数列:

[1, 2, 4, 8, 19, 38, 76, 107, 152, 214, 428, 856, 1303, 2033, 2606, 4066, 5212, 8132, 10424, 16264, 24757, 49514, 99028, 139421, 198056, 278842, 557684, 1115368, 2648999, 5297998, 10595996, 21191992]

約数ペア:

[(1, 21191992), (2, 10595996), (4, 5297998), (8, 2648999), (19, 1115368), (38, 557684), (76, 278842), (107, 198056), (152, 139421), (214, 99028), (428, 49514), (856, 24757), (1303, 16264), (2033, 10424), (2606, 8132), (4066, 5212)]