28248155

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{257}}^1$

素因数の和:383

約数の個数: 32

約数和(自身を含む): 39009600

約数和(自身を除く): 10761445

約数列:

[1, 5, 13, 19, 65, 89, 95, 247, 257, 445, 1157, 1235, 1285, 1691, 3341, 4883, 5785, 8455, 16705, 21983, 22873, 24415, 63479, 109915, 114365, 297349, 317395, 434587, 1486745, 2172935, 5649631, 28248155]

約数ペア:

[(1, 28248155), (5, 5649631), (13, 2172935), (19, 1486745), (65, 434587), (89, 317395), (95, 297349), (247, 114365), (257, 109915), (445, 63479), (1157, 24415), (1235, 22873), (1285, 21983), (1691, 16705), (3341, 8455), (4883, 5785)]