81307821

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{11987}}^1$

素因数の和:12033

約数の個数: 32

約数和(自身を含む): 138101760

約数和(自身を除く): 56793939

約数列:

[1, 3, 7, 17, 19, 21, 51, 57, 119, 133, 323, 357, 399, 969, 2261, 6783, 11987, 35961, 83909, 203779, 227753, 251727, 611337, 683259, 1426453, 1594271, 3871801, 4279359, 4782813, 11615403, 27102607, 81307821]

約数ペア:

[(1, 81307821), (3, 27102607), (7, 11615403), (17, 4782813), (19, 4279359), (21, 3871801), (51, 1594271), (57, 1426453), (119, 683259), (133, 611337), (323, 251727), (357, 227753), (399, 203779), (969, 83909), (2261, 35961), (6783, 11987)]