21749266

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{347}}^1$

素因数の和:415

約数の個数: 48

約数和(自身を含む): 42211008

約数和(自身を除く): 20461742

約数列:

[1, 2, 7, 11, 14, 22, 37, 74, 77, 121, 154, 242, 259, 347, 407, 518, 694, 814, 847, 1694, 2429, 2849, 3817, 4477, 4858, 5698, 7634, 8954, 12839, 25678, 26719, 31339, 41987, 53438, 62678, 83974, 89873, 141229, 179746, 282458, 293909, 587818, 988603, 1553519, 1977206, 3107038, 10874633, 21749266]

約数ペア:

[(1, 21749266), (2, 10874633), (7, 3107038), (11, 1977206), (14, 1553519), (22, 988603), (37, 587818), (74, 293909), (77, 282458), (121, 179746), (154, 141229), (242, 89873), (259, 83974), (347, 62678), (407, 53438), (518, 41987), (694, 31339), (814, 26719), (847, 25678), (1694, 12839), (2429, 8954), (2849, 7634), (3817, 5698), (4477, 4858)]