21716912

素因数分解:

$2^4\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2731}}^1$

素因数の和:2817

約数の個数: 40

約数和(自身を含む): 48782592

約数和(自身を除く): 27065680

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 71, 112, 142, 284, 497, 568, 994, 1136, 1988, 2731, 3976, 5462, 7952, 10924, 19117, 21848, 38234, 43696, 76468, 152936, 193901, 305872, 387802, 775604, 1357307, 1551208, 2714614, 3102416, 5429228, 10858456, 21716912]

約数ペア:

[(1, 21716912), (2, 10858456), (4, 5429228), (7, 3102416), (8, 2714614), (14, 1551208), (16, 1357307), (28, 775604), (56, 387802), (71, 305872), (112, 193901), (142, 152936), (284, 76468), (497, 43696), (568, 38234), (994, 21848), (1136, 19117), (1988, 10924), (2731, 7952), (3976, 5462)]