20687744

素因数分解:

$2^7\times 7^1\times {\mathrm{11}}^1\times {\mathrm{2099}}^1$

素因数の和:2131

約数の個数: 64

約数和(自身を含む): 51408000

約数和(自身を除く): 30720256

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 44, 56, 64, 77, 88, 112, 128, 154, 176, 224, 308, 352, 448, 616, 704, 896, 1232, 1408, 2099, 2464, 4198, 4928, 8396, 9856, 14693, 16792, 23089, 29386, 33584, 46178, 58772, 67168, 92356, 117544, 134336, 161623, 184712, 235088, 268672, 323246, 369424, 470176, 646492, 738848, 940352, 1292984, 1477696, 1880704, 2585968, 2955392, 5171936, 10343872, 20687744]

約数ペア:

[(1, 20687744), (2, 10343872), (4, 5171936), (7, 2955392), (8, 2585968), (11, 1880704), (14, 1477696), (16, 1292984), (22, 940352), (28, 738848), (32, 646492), (44, 470176), (56, 369424), (64, 323246), (77, 268672), (88, 235088), (112, 184712), (128, 161623), (154, 134336), (176, 117544), (224, 92356), (308, 67168), (352, 58772), (448, 46178), (616, 33584), (704, 29386), (896, 23089), (1232, 16792), (1408, 14693), (2099, 9856), (2464, 8396), (4198, 4928)]