21072254

素因数分解:

$2^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{11317}}^1$

素因数の和:11352

約数の個数: 24

約数和(自身を含む): 38707560

約数和(自身を除く): 17635306

約数列:

[1, 2, 7, 14, 19, 38, 49, 98, 133, 266, 931, 1862, 11317, 22634, 79219, 158438, 215023, 430046, 554533, 1109066, 1505161, 3010322, 10536127, 21072254]

約数ペア:

[(1, 21072254), (2, 10536127), (7, 3010322), (14, 1505161), (19, 1109066), (38, 554533), (49, 430046), (98, 215023), (133, 158438), (266, 79219), (931, 22634), (1862, 11317)]