20190128

素因数分解:

$2^4\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2539}}^1$

素因数の和:2625

約数の個数: 40

約数和(自身を含む): 45354240

約数和(自身を除く): 25164112

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 71, 112, 142, 284, 497, 568, 994, 1136, 1988, 2539, 3976, 5078, 7952, 10156, 17773, 20312, 35546, 40624, 71092, 142184, 180269, 284368, 360538, 721076, 1261883, 1442152, 2523766, 2884304, 5047532, 10095064, 20190128]

約数ペア:

[(1, 20190128), (2, 10095064), (4, 5047532), (7, 2884304), (8, 2523766), (14, 1442152), (16, 1261883), (28, 721076), (56, 360538), (71, 284368), (112, 180269), (142, 142184), (284, 71092), (497, 40624), (568, 35546), (994, 20312), (1136, 17773), (1988, 10156), (2539, 7952), (3976, 5078)]