20113885

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{251}}^1$

素因数の和:345

約数の個数: 32

約数和(自身を含む): 27869184

約数和(自身を除く): 7755299

約数列:

[1, 5, 11, 31, 47, 55, 155, 235, 251, 341, 517, 1255, 1457, 1705, 2585, 2761, 7285, 7781, 11797, 13805, 16027, 38905, 58985, 80135, 85591, 129767, 365707, 427955, 648835, 1828535, 4022777, 20113885]

約数ペア:

[(1, 20113885), (5, 4022777), (11, 1828535), (31, 648835), (47, 427955), (55, 365707), (155, 129767), (235, 85591), (251, 80135), (341, 58985), (517, 38905), (1255, 16027), (1457, 13805), (1705, 11797), (2585, 7781), (2761, 7285)]