21626997

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{809}}^1$

素因数の和:905

約数の個数: 32

約数和(自身を含む): 35251200

約数和(自身を除く): 13624203

約数列:

[1, 3, 7, 19, 21, 57, 67, 133, 201, 399, 469, 809, 1273, 1407, 2427, 3819, 5663, 8911, 15371, 16989, 26733, 46113, 54203, 107597, 162609, 322791, 379421, 1029857, 1138263, 3089571, 7208999, 21626997]

約数ペア:

[(1, 21626997), (3, 7208999), (7, 3089571), (19, 1138263), (21, 1029857), (57, 379421), (67, 322791), (133, 162609), (201, 107597), (399, 54203), (469, 46113), (809, 26733), (1273, 16989), (1407, 15371), (2427, 8911), (3819, 5663)]