20571008381

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{359}}^1\times {\mathrm{12613}}^1$

素因数の和:13049

約数の個数: 32

約数和(自身を含む): 26156390400

約数和(自身を除く): 5585382019

約数列:

[1, 7, 11, 59, 77, 359, 413, 649, 2513, 3949, 4543, 12613, 21181, 27643, 88291, 138743, 148267, 232991, 744167, 971201, 1630937, 4528067, 5209169, 8185837, 31696469, 49808737, 57300859, 267155953, 348661159, 1870091671, 2938715483, 20571008381]

約数ペア:

[(1, 20571008381), (7, 2938715483), (11, 1870091671), (59, 348661159), (77, 267155953), (359, 57300859), (413, 49808737), (649, 31696469), (2513, 8185837), (3949, 5209169), (4543, 4528067), (12613, 1630937), (21181, 971201), (27643, 744167), (88291, 232991), (138743, 148267)]