20792920

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{233}}^1$

素因数の和:364

約数の個数: 64

約数和(自身を含む): 49533120

約数和(自身を除く): 28740200

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 97, 115, 184, 194, 230, 233, 388, 460, 466, 485, 776, 920, 932, 970, 1165, 1864, 1940, 2231, 2330, 3880, 4462, 4660, 5359, 8924, 9320, 10718, 11155, 17848, 21436, 22310, 22601, 26795, 42872, 44620, 45202, 53590, 89240, 90404, 107180, 113005, 180808, 214360, 226010, 452020, 519823, 904040, 1039646, 2079292, 2599115, 4158584, 5198230, 10396460, 20792920]

約数ペア:

[(1, 20792920), (2, 10396460), (4, 5198230), (5, 4158584), (8, 2599115), (10, 2079292), (20, 1039646), (23, 904040), (40, 519823), (46, 452020), (92, 226010), (97, 214360), (115, 180808), (184, 113005), (194, 107180), (230, 90404), (233, 89240), (388, 53590), (460, 45202), (466, 44620), (485, 42872), (776, 26795), (920, 22601), (932, 22310), (970, 21436), (1165, 17848), (1864, 11155), (1940, 10718), (2231, 9320), (2330, 8924), (3880, 5359), (4462, 4660)]