81645356

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{4861}}^1$

素因数の和:4914

約数の個数: 48

約数和(自身を含む): 171531360

約数和(自身を除く): 89886004

約数列:

[1, 2, 4, 13, 17, 19, 26, 34, 38, 52, 68, 76, 221, 247, 323, 442, 494, 646, 884, 988, 1292, 4199, 4861, 8398, 9722, 16796, 19444, 63193, 82637, 92359, 126386, 165274, 184718, 252772, 330548, 369436, 1074281, 1200667, 1570103, 2148562, 2401334, 3140206, 4297124, 4802668, 6280412, 20411339, 40822678, 81645356]

約数ペア:

[(1, 81645356), (2, 40822678), (4, 20411339), (13, 6280412), (17, 4802668), (19, 4297124), (26, 3140206), (34, 2401334), (38, 2148562), (52, 1570103), (68, 1200667), (76, 1074281), (221, 369436), (247, 330548), (323, 252772), (442, 184718), (494, 165274), (646, 126386), (884, 92359), (988, 82637), (1292, 63193), (4199, 19444), (4861, 16796), (8398, 9722)]