20998208

素因数分解:

$2^6\times 7^1\times {\mathrm{11}}^1\times {\mathrm{4261}}^1$

素因数の和:4291

約数の個数: 56

約数和(自身を含む): 51962304

約数和(自身を除く): 30964096

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 44, 56, 64, 77, 88, 112, 154, 176, 224, 308, 352, 448, 616, 704, 1232, 2464, 4261, 4928, 8522, 17044, 29827, 34088, 46871, 59654, 68176, 93742, 119308, 136352, 187484, 238616, 272704, 328097, 374968, 477232, 656194, 749936, 954464, 1312388, 1499872, 1908928, 2624776, 2999744, 5249552, 10499104, 20998208]

約数ペア:

[(1, 20998208), (2, 10499104), (4, 5249552), (7, 2999744), (8, 2624776), (11, 1908928), (14, 1499872), (16, 1312388), (22, 954464), (28, 749936), (32, 656194), (44, 477232), (56, 374968), (64, 328097), (77, 272704), (88, 238616), (112, 187484), (154, 136352), (176, 119308), (224, 93742), (308, 68176), (352, 59654), (448, 46871), (616, 34088), (704, 29827), (1232, 17044), (2464, 8522), (4261, 4928)]