28354640

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{20849}}^1$

素因数の和:20879

約数の個数: 40

約数和(自身を含む): 69805800

約数和(自身を除く): 41451160

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 20849, 41698, 83396, 104245, 166792, 208490, 333584, 354433, 416980, 708866, 833960, 1417732, 1667920, 1772165, 2835464, 3544330, 5670928, 7088660, 14177320, 28354640]

約数ペア:

[(1, 28354640), (2, 14177320), (4, 7088660), (5, 5670928), (8, 3544330), (10, 2835464), (16, 1772165), (17, 1667920), (20, 1417732), (34, 833960), (40, 708866), (68, 416980), (80, 354433), (85, 333584), (136, 208490), (170, 166792), (272, 104245), (340, 83396), (680, 41698), (1360, 20849)]