20508729458

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{199}}^1\times {\mathrm{2861}}^1$

素因数の和:3183

約数の個数: 64

約数和(自身を含む): 36926668800

約数和(自身を除く): 16417939342

約数列:

[1, 2, 7, 14, 31, 62, 83, 166, 199, 217, 398, 434, 581, 1162, 1393, 2573, 2786, 2861, 5146, 5722, 6169, 12338, 16517, 18011, 20027, 33034, 36022, 40054, 43183, 86366, 88691, 115619, 177382, 231238, 237463, 474926, 512027, 569339, 620837, 1024054, 1138678, 1241674, 1662241, 3324482, 3584189, 3985373, 7168378, 7361353, 7970746, 14722706, 17649509, 35299018, 47255137, 51529471, 94510274, 103058942, 123546563, 247093126, 330785959, 661571918, 1464909247, 2929818494, 10254364729, 20508729458]

約数ペア:

[(1, 20508729458), (2, 10254364729), (7, 2929818494), (14, 1464909247), (31, 661571918), (62, 330785959), (83, 247093126), (166, 123546563), (199, 103058942), (217, 94510274), (398, 51529471), (434, 47255137), (581, 35299018), (1162, 17649509), (1393, 14722706), (2573, 7970746), (2786, 7361353), (2861, 7168378), (5146, 3985373), (5722, 3584189), (6169, 3324482), (12338, 1662241), (16517, 1241674), (18011, 1138678), (20027, 1024054), (33034, 620837), (36022, 569339), (40054, 512027), (43183, 474926), (86366, 237463), (88691, 231238), (115619, 177382)]