20205990

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{10691}}^1$

素因数の和:10714

約数の個数: 64

約数和(自身を含む): 61585920

約数和(自身を除く): 41379930

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 90, 105, 126, 135, 189, 210, 270, 315, 378, 630, 945, 1890, 10691, 21382, 32073, 53455, 64146, 74837, 96219, 106910, 149674, 160365, 192438, 224511, 288657, 320730, 374185, 449022, 481095, 577314, 673533, 748370, 962190, 1122555, 1347066, 1443285, 2020599, 2245110, 2886570, 3367665, 4041198, 6735330, 10102995, 20205990]

約数ペア:

[(1, 20205990), (2, 10102995), (3, 6735330), (5, 4041198), (6, 3367665), (7, 2886570), (9, 2245110), (10, 2020599), (14, 1443285), (15, 1347066), (18, 1122555), (21, 962190), (27, 748370), (30, 673533), (35, 577314), (42, 481095), (45, 449022), (54, 374185), (63, 320730), (70, 288657), (90, 224511), (105, 192438), (126, 160365), (135, 149674), (189, 106910), (210, 96219), (270, 74837), (315, 64146), (378, 53455), (630, 32073), (945, 21382), (1890, 10691)]