28408289

素因数分解:

$7^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{277}}^1$

素因数の和:334

約数の個数: 32

約数和(自身を含む): 37363200

約数和(自身を除く): 8954911

約数列:

[1, 7, 13, 23, 49, 91, 161, 277, 299, 343, 637, 1127, 1939, 2093, 3601, 4459, 6371, 7889, 13573, 14651, 25207, 44597, 82823, 95011, 102557, 176449, 312179, 579761, 1235143, 2185253, 4058327, 28408289]

約数ペア:

[(1, 28408289), (7, 4058327), (13, 2185253), (23, 1235143), (49, 579761), (91, 312179), (161, 176449), (277, 102557), (299, 95011), (343, 82823), (637, 44597), (1127, 25207), (1939, 14651), (2093, 13573), (3601, 7889), (4459, 6371)]