21895643

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{389}}^1$

素因数の和:467

約数の個数: 32

約数和(自身を含む): 29652480

約数和(自身を除く): 7756837

約数列:

[1, 7, 11, 17, 43, 77, 119, 187, 301, 389, 473, 731, 1309, 2723, 3311, 4279, 5117, 6613, 8041, 16727, 29953, 46291, 56287, 72743, 117089, 183997, 284359, 509201, 1287979, 1990513, 3127949, 21895643]

約数ペア:

[(1, 21895643), (7, 3127949), (11, 1990513), (17, 1287979), (43, 509201), (77, 284359), (119, 183997), (187, 117089), (301, 72743), (389, 56287), (473, 46291), (731, 29953), (1309, 16727), (2723, 8041), (3311, 6613), (4279, 5117)]