20990032

素因数分解:

$2^4\times 7^2\times {\mathrm{41}}^1\times {\mathrm{653}}^1$

素因数の和:716

約数の個数: 60

約数和(自身を含む): 48535956

約数和(自身を除く): 27545924

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 41, 49, 56, 82, 98, 112, 164, 196, 287, 328, 392, 574, 653, 656, 784, 1148, 1306, 2009, 2296, 2612, 4018, 4571, 4592, 5224, 8036, 9142, 10448, 16072, 18284, 26773, 31997, 32144, 36568, 53546, 63994, 73136, 107092, 127988, 187411, 214184, 255976, 374822, 428368, 511952, 749644, 1311877, 1499288, 2623754, 2998576, 5247508, 10495016, 20990032]

約数ペア:

[(1, 20990032), (2, 10495016), (4, 5247508), (7, 2998576), (8, 2623754), (14, 1499288), (16, 1311877), (28, 749644), (41, 511952), (49, 428368), (56, 374822), (82, 255976), (98, 214184), (112, 187411), (164, 127988), (196, 107092), (287, 73136), (328, 63994), (392, 53546), (574, 36568), (653, 32144), (656, 31997), (784, 26773), (1148, 18284), (1306, 16072), (2009, 10448), (2296, 9142), (2612, 8036), (4018, 5224), (4571, 4592)]