21217724

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{13033}}^1$

素因数の和:13085

約数の個数: 24

約数和(自身を含む): 41604528

約数和(自身を除く): 20386804

約数列:

[1, 2, 4, 11, 22, 37, 44, 74, 148, 407, 814, 1628, 13033, 26066, 52132, 143363, 286726, 482221, 573452, 964442, 1928884, 5304431, 10608862, 21217724]

約数ペア:

[(1, 21217724), (2, 10608862), (4, 5304431), (11, 1928884), (22, 964442), (37, 573452), (44, 482221), (74, 286726), (148, 143363), (407, 52132), (814, 26066), (1628, 13033)]