28780659

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{257}}^1\times {\mathrm{541}}^1$

素因数の和:827

約数の個数: 24

約数和(自身を含む): 43628832

約数和(自身を除く): 14848173

約数列:

[1, 3, 9, 23, 69, 207, 257, 541, 771, 1623, 2313, 4869, 5911, 12443, 17733, 37329, 53199, 111987, 139037, 417111, 1251333, 3197851, 9593553, 28780659]

約数ペア:

[(1, 28780659), (3, 9593553), (9, 3197851), (23, 1251333), (69, 417111), (207, 139037), (257, 111987), (541, 53199), (771, 37329), (1623, 17733), (2313, 12443), (4869, 5911)]