21452786

素因数分解:

$2^1\times {\mathrm{19}}^2\times {\mathrm{43}}^1\times {\mathrm{691}}^1$

素因数の和:774

約数の個数: 24

約数和(自身を含む): 34802064

約数和(自身を除く): 13349278

約数列:

[1, 2, 19, 38, 43, 86, 361, 691, 722, 817, 1382, 1634, 13129, 15523, 26258, 29713, 31046, 59426, 249451, 498902, 564547, 1129094, 10726393, 21452786]

約数ペア:

[(1, 21452786), (2, 10726393), (19, 1129094), (38, 564547), (43, 498902), (86, 249451), (361, 59426), (691, 31046), (722, 29713), (817, 26258), (1382, 15523), (1634, 13129)]