21967540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{907}}^1$

素因数の和:1096

約数の個数: 48

約数和(自身を含む): 53085312

約数和(自身を除く): 31117772

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 173, 346, 692, 865, 907, 1211, 1730, 1814, 2422, 3460, 3628, 4535, 4844, 6055, 6349, 9070, 12110, 12698, 18140, 24220, 25396, 31745, 63490, 126980, 156911, 313822, 627644, 784555, 1098377, 1569110, 2196754, 3138220, 4393508, 5491885, 10983770, 21967540]

約数ペア:

[(1, 21967540), (2, 10983770), (4, 5491885), (5, 4393508), (7, 3138220), (10, 2196754), (14, 1569110), (20, 1098377), (28, 784555), (35, 627644), (70, 313822), (140, 156911), (173, 126980), (346, 63490), (692, 31745), (865, 25396), (907, 24220), (1211, 18140), (1730, 12698), (1814, 12110), (2422, 9070), (3460, 6349), (3628, 6055), (4535, 4844)]