21005812

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{2887}}^1$

素因数の和:3015

約数の個数: 24

約数和(自身を含む): 39299904

約数和(自身を除く): 18294092

約数列:

[1, 2, 4, 17, 34, 68, 107, 214, 428, 1819, 2887, 3638, 5774, 7276, 11548, 49079, 98158, 196316, 308909, 617818, 1235636, 5251453, 10502906, 21005812]

約数ペア:

[(1, 21005812), (2, 10502906), (4, 5251453), (17, 1235636), (34, 617818), (68, 308909), (107, 196316), (214, 98158), (428, 49079), (1819, 11548), (2887, 7276), (3638, 5774)]