21037540

素因数分解:

$2^2\times 5^1\times {\mathrm{631}}^1\times {\mathrm{1667}}^1$

素因数の和:2307

約数の個数: 24

約数和(自身を含む): 44275392

約数和(自身を除く): 23237852

約数列:

[1, 2, 4, 5, 10, 20, 631, 1262, 1667, 2524, 3155, 3334, 6310, 6668, 8335, 12620, 16670, 33340, 1051877, 2103754, 4207508, 5259385, 10518770, 21037540]

約数ペア:

[(1, 21037540), (2, 10518770), (4, 5259385), (5, 4207508), (10, 2103754), (20, 1051877), (631, 33340), (1262, 16670), (1667, 12620), (2524, 8335), (3155, 6668), (3334, 6310)]