21379672

素因数分解:

$2^3\times {\mathrm{137}}^1\times {\mathrm{19507}}^1$

素因数の和:19650

約数の個数: 16

約数和(自身を含む): 40381560

約数和(自身を除く): 19001888

約数列:

[1, 2, 4, 8, 137, 274, 548, 1096, 19507, 39014, 78028, 156056, 2672459, 5344918, 10689836, 21379672]

約数ペア:

[(1, 21379672), (2, 10689836), (4, 5344918), (8, 2672459), (137, 156056), (274, 78028), (548, 39014), (1096, 19507)]