28426489

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{401}}^1$

素因数の和:481

約数の個数: 32

約数和(自身を含む): 37820160

約数和(自身を除く): 9393671

約数列:

[1, 7, 13, 19, 41, 91, 133, 247, 287, 401, 533, 779, 1729, 2807, 3731, 5213, 5453, 7619, 10127, 16441, 36491, 53333, 70889, 99047, 115087, 213733, 312379, 693329, 1496131, 2186653, 4060927, 28426489]

約数ペア:

[(1, 28426489), (7, 4060927), (13, 2186653), (19, 1496131), (41, 693329), (91, 312379), (133, 213733), (247, 115087), (287, 99047), (401, 70889), (533, 53333), (779, 36491), (1729, 16441), (2807, 10127), (3731, 7619), (5213, 5453)]