20564908

素因数分解:

$2^2\times 7^3\times {\mathrm{13}}^1\times {\mathrm{1153}}^1$

素因数の和:1191

約数の個数: 48

約数和(自身を含む): 45236800

約数和(自身を除く): 24671892

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 49, 52, 91, 98, 182, 196, 343, 364, 637, 686, 1153, 1274, 1372, 2306, 2548, 4459, 4612, 8071, 8918, 14989, 16142, 17836, 29978, 32284, 56497, 59956, 104923, 112994, 209846, 225988, 395479, 419692, 734461, 790958, 1468922, 1581916, 2937844, 5141227, 10282454, 20564908]

約数ペア:

[(1, 20564908), (2, 10282454), (4, 5141227), (7, 2937844), (13, 1581916), (14, 1468922), (26, 790958), (28, 734461), (49, 419692), (52, 395479), (91, 225988), (98, 209846), (182, 112994), (196, 104923), (343, 59956), (364, 56497), (637, 32284), (686, 29978), (1153, 17836), (1274, 16142), (1372, 14989), (2306, 8918), (2548, 8071), (4459, 4612)]