20838805

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{263}}^1$

素因数の和:357

約数の個数: 32

約数和(自身を含む): 28740096

約数和(自身を除く): 7901291

約数列:

[1, 5, 13, 23, 53, 65, 115, 263, 265, 299, 689, 1219, 1315, 1495, 3419, 3445, 6049, 6095, 13939, 15847, 17095, 30245, 69695, 78637, 79235, 181207, 320597, 393185, 906035, 1602985, 4167761, 20838805]

約数ペア:

[(1, 20838805), (5, 4167761), (13, 1602985), (23, 906035), (53, 393185), (65, 320597), (115, 181207), (263, 79235), (265, 78637), (299, 69695), (689, 30245), (1219, 17095), (1315, 15847), (1495, 13939), (3419, 6095), (3445, 6049)]