20178891556

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{1559}}^1\times {\mathrm{2333}}^1$

素因数の和:3988

約数の個数: 48

約数和(自身を含む): 37721174400

約数和(自身を除く): 17542282844

約数列:

[1, 2, 4, 19, 38, 73, 76, 146, 292, 1387, 1559, 2333, 2774, 3118, 4666, 5548, 6236, 9332, 29621, 44327, 59242, 88654, 113807, 118484, 170309, 177308, 227614, 340618, 455228, 681236, 2162333, 3235871, 3637147, 4324666, 6471742, 7274294, 8649332, 12943484, 14548588, 69105793, 138211586, 265511731, 276423172, 531023462, 1062046924, 5044722889, 10089445778, 20178891556]

約数ペア:

[(1, 20178891556), (2, 10089445778), (4, 5044722889), (19, 1062046924), (38, 531023462), (73, 276423172), (76, 265511731), (146, 138211586), (292, 69105793), (1387, 14548588), (1559, 12943484), (2333, 8649332), (2774, 7274294), (3118, 6471742), (4666, 4324666), (5548, 3637147), (6236, 3235871), (9332, 2162333), (29621, 681236), (44327, 455228), (59242, 340618), (88654, 227614), (113807, 177308), (118484, 170309)]