21009254

素因数分解:

$2^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{337}}^1$

素因数の和:480

約数の個数: 32

約数和(自身を含む): 37217856

約数和(自身を除く): 16208602

約数列:

[1, 2, 7, 14, 61, 73, 122, 146, 337, 427, 511, 674, 854, 1022, 2359, 4453, 4718, 8906, 20557, 24601, 31171, 41114, 49202, 62342, 143899, 172207, 287798, 344414, 1500661, 3001322, 10504627, 21009254]

約数ペア:

[(1, 21009254), (2, 10504627), (7, 3001322), (14, 1500661), (61, 344414), (73, 287798), (122, 172207), (146, 143899), (337, 62342), (427, 49202), (511, 41114), (674, 31171), (854, 24601), (1022, 20557), (2359, 8906), (4453, 4718)]