20347808

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1193}}^1$

素因数の和:1257

約数の個数: 48

約数和(自身を含む): 44230536

約数和(自身を除く): 23882728

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 41, 52, 82, 104, 164, 208, 328, 416, 533, 656, 1066, 1193, 1312, 2132, 2386, 4264, 4772, 8528, 9544, 15509, 17056, 19088, 31018, 38176, 48913, 62036, 97826, 124072, 195652, 248144, 391304, 496288, 635869, 782608, 1271738, 1565216, 2543476, 5086952, 10173904, 20347808]

約数ペア:

[(1, 20347808), (2, 10173904), (4, 5086952), (8, 2543476), (13, 1565216), (16, 1271738), (26, 782608), (32, 635869), (41, 496288), (52, 391304), (82, 248144), (104, 195652), (164, 124072), (208, 97826), (328, 62036), (416, 48913), (533, 38176), (656, 31018), (1066, 19088), (1193, 17056), (1312, 15509), (2132, 9544), (2386, 8528), (4264, 4772)]