20791108

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{47}}^2\times {\mathrm{181}}^1$

素因数の和:292

約数の個数: 36

約数和(自身を含む): 40255852

約数和(自身を除く): 19464744

約数列:

[1, 2, 4, 13, 26, 47, 52, 94, 181, 188, 362, 611, 724, 1222, 2209, 2353, 2444, 4418, 4706, 8507, 8836, 9412, 17014, 28717, 34028, 57434, 110591, 114868, 221182, 399829, 442364, 799658, 1599316, 5197777, 10395554, 20791108]

約数ペア:

[(1, 20791108), (2, 10395554), (4, 5197777), (13, 1599316), (26, 799658), (47, 442364), (52, 399829), (94, 221182), (181, 114868), (188, 110591), (362, 57434), (611, 34028), (724, 28717), (1222, 17014), (2209, 9412), (2353, 8836), (2444, 8507), (4418, 4706)]