21571788

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{3617}}^1$

素因数の和:3702

約数の個数: 48

約数和(自身を含む): 58351104

約数和(自身を除く): 36779316

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 71, 84, 142, 213, 284, 426, 497, 852, 994, 1491, 1988, 2982, 3617, 5964, 7234, 10851, 14468, 21702, 25319, 43404, 50638, 75957, 101276, 151914, 256807, 303828, 513614, 770421, 1027228, 1540842, 1797649, 3081684, 3595298, 5392947, 7190596, 10785894, 21571788]

約数ペア:

[(1, 21571788), (2, 10785894), (3, 7190596), (4, 5392947), (6, 3595298), (7, 3081684), (12, 1797649), (14, 1540842), (21, 1027228), (28, 770421), (42, 513614), (71, 303828), (84, 256807), (142, 151914), (213, 101276), (284, 75957), (426, 50638), (497, 43404), (852, 25319), (994, 21702), (1491, 14468), (1988, 10851), (2982, 7234), (3617, 5964)]