21404726

素因数分解:

$2^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{52721}}^1$

素因数の和:52759

約数の個数: 16

約数和(自身を含む): 37959840

約数和(自身を除く): 16555114

約数列:

[1, 2, 7, 14, 29, 58, 203, 406, 52721, 105442, 369047, 738094, 1528909, 3057818, 10702363, 21404726]

約数ペア:

[(1, 21404726), (2, 10702363), (7, 3057818), (14, 1528909), (29, 738094), (58, 369047), (203, 105442), (406, 52721)]