21202181

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{359}}^1$

素因数の和:449

約数の個数: 32

約数和(自身を含む): 29030400

約数和(自身を除く): 7828219

約数列:

[1, 7, 11, 13, 59, 77, 91, 143, 359, 413, 649, 767, 1001, 2513, 3949, 4543, 4667, 5369, 8437, 21181, 27643, 32669, 51337, 59059, 148267, 232991, 275353, 359359, 1630937, 1927471, 3028883, 21202181]

約数ペア:

[(1, 21202181), (7, 3028883), (11, 1927471), (13, 1630937), (59, 359359), (77, 275353), (91, 232991), (143, 148267), (359, 59059), (413, 51337), (649, 32669), (767, 27643), (1001, 21181), (2513, 8437), (3949, 5369), (4543, 4667)]