21140394

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{787}}^1$

素因数の和:851

約数の個数: 48

約数和(自身を含む): 47790624

約数和(自身を除く): 26650230

約数列:

[1, 2, 3, 6, 11, 22, 33, 37, 66, 74, 111, 121, 222, 242, 363, 407, 726, 787, 814, 1221, 1574, 2361, 2442, 4477, 4722, 8657, 8954, 13431, 17314, 25971, 26862, 29119, 51942, 58238, 87357, 95227, 174714, 190454, 285681, 320309, 571362, 640618, 960927, 1921854, 3523399, 7046798, 10570197, 21140394]

約数ペア:

[(1, 21140394), (2, 10570197), (3, 7046798), (6, 3523399), (11, 1921854), (22, 960927), (33, 640618), (37, 571362), (66, 320309), (74, 285681), (111, 190454), (121, 174714), (222, 95227), (242, 87357), (363, 58238), (407, 51942), (726, 29119), (787, 26862), (814, 25971), (1221, 17314), (1574, 13431), (2361, 8954), (2442, 8657), (4477, 4722)]