21646840

素因数分解:

$2^3\times 5^1\times {\mathrm{293}}^1\times {\mathrm{1847}}^1$

素因数の和:2151

約数の個数: 32

約数和(自身を含む): 48898080

約数和(自身を除く): 27251240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 293, 586, 1172, 1465, 1847, 2344, 2930, 3694, 5860, 7388, 9235, 11720, 14776, 18470, 36940, 73880, 541171, 1082342, 2164684, 2705855, 4329368, 5411710, 10823420, 21646840]

約数ペア:

[(1, 21646840), (2, 10823420), (4, 5411710), (5, 4329368), (8, 2705855), (10, 2164684), (20, 1082342), (40, 541171), (293, 73880), (586, 36940), (1172, 18470), (1465, 14776), (1847, 11720), (2344, 9235), (2930, 7388), (3694, 5860)]