20716360

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{241}}^1\times {\mathrm{307}}^1$

素因数の和:566

約数の個数: 64

約数和(自身を含む): 53665920

約数和(自身を除く): 32949560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 241, 280, 307, 482, 614, 964, 1205, 1228, 1535, 1687, 1928, 2149, 2410, 2456, 3070, 3374, 4298, 4820, 6140, 6748, 8435, 8596, 9640, 10745, 12280, 13496, 16870, 17192, 21490, 33740, 42980, 67480, 73987, 85960, 147974, 295948, 369935, 517909, 591896, 739870, 1035818, 1479740, 2071636, 2589545, 2959480, 4143272, 5179090, 10358180, 20716360]

約数ペア:

[(1, 20716360), (2, 10358180), (4, 5179090), (5, 4143272), (7, 2959480), (8, 2589545), (10, 2071636), (14, 1479740), (20, 1035818), (28, 739870), (35, 591896), (40, 517909), (56, 369935), (70, 295948), (140, 147974), (241, 85960), (280, 73987), (307, 67480), (482, 42980), (614, 33740), (964, 21490), (1205, 17192), (1228, 16870), (1535, 13496), (1687, 12280), (1928, 10745), (2149, 9640), (2410, 8596), (2456, 8435), (3070, 6748), (3374, 6140), (4298, 4820)]