21019378

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{26879}}^1$

素因数の和:26921

約数の個数: 16

約数和(自身を含む): 34836480

約数和(自身を除く): 13817102

約数列:

[1, 2, 17, 23, 34, 46, 391, 782, 26879, 53758, 456943, 618217, 913886, 1236434, 10509689, 21019378]

約数ペア:

[(1, 21019378), (2, 10509689), (17, 1236434), (23, 913886), (34, 618217), (46, 456943), (391, 53758), (782, 26879)]