20203911

素因数分解:

$3^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2741}}^1$

素因数の和:2773

約数の個数: 40

約数和(自身を含む): 37159584

約数和(自身を除く): 16955673

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 81, 91, 117, 189, 273, 351, 567, 819, 1053, 2457, 2741, 7371, 8223, 19187, 24669, 35633, 57561, 74007, 106899, 172683, 222021, 249431, 320697, 518049, 748293, 962091, 1554147, 2244879, 2886273, 6734637, 20203911]

約数ペア:

[(1, 20203911), (3, 6734637), (7, 2886273), (9, 2244879), (13, 1554147), (21, 962091), (27, 748293), (39, 518049), (63, 320697), (81, 249431), (91, 222021), (117, 172683), (189, 106899), (273, 74007), (351, 57561), (567, 35633), (819, 24669), (1053, 19187), (2457, 8223), (2741, 7371)]