81449711

素因数分解:

$7^2\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{397}}^1$

素因数の和:543

約数の個数: 24

約数和(自身を含む): 98003520

約数和(自身を除く): 16553809

約数列:

[1, 7, 49, 53, 79, 371, 397, 553, 2597, 2779, 3871, 4187, 19453, 21041, 29309, 31363, 147287, 205163, 219541, 1031009, 1536787, 1662239, 11635673, 81449711]

約数ペア:

[(1, 81449711), (7, 11635673), (49, 1662239), (53, 1536787), (79, 1031009), (371, 219541), (397, 205163), (553, 147287), (2597, 31363), (2779, 29309), (3871, 21041), (4187, 19453)]