20748755

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{83}}^1\times {\mathrm{173}}^1$

素因数の和:295

約数の個数: 24

約数和(自身を含む): 26922672

約数和(自身を除く): 6173917

約数列:

[1, 5, 17, 83, 85, 173, 289, 415, 865, 1411, 1445, 2941, 7055, 14359, 14705, 23987, 49997, 71795, 119935, 244103, 249985, 1220515, 4149751, 20748755]

約数ペア:

[(1, 20748755), (5, 4149751), (17, 1220515), (83, 249985), (85, 244103), (173, 119935), (289, 71795), (415, 49997), (865, 23987), (1411, 14705), (1445, 14359), (2941, 7055)]