21673379

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1$

素因数の和:255

約数の個数: 32

約数和(自身を含む): 28242816

約数和(自身を除く): 6569437

約数列:

[1, 7, 13, 37, 41, 91, 157, 259, 287, 481, 533, 1099, 1517, 2041, 3367, 3731, 5809, 6437, 10619, 14287, 19721, 40663, 45059, 75517, 83681, 138047, 238169, 528619, 585767, 1667183, 3096197, 21673379]

約数ペア:

[(1, 21673379), (7, 3096197), (13, 1667183), (37, 585767), (41, 528619), (91, 238169), (157, 138047), (259, 83681), (287, 75517), (481, 45059), (533, 40663), (1099, 19721), (1517, 14287), (2041, 10619), (3367, 6437), (3731, 5809)]