21503041

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{1511}}^1$

素因数の和:1644

約数の個数: 16

約数和(自身を含む): 26127360

約数和(自身を除く): 4624319

約数列:

[1, 7, 19, 107, 133, 749, 1511, 2033, 10577, 14231, 28709, 161677, 200963, 1131739, 3071863, 21503041]

約数ペア:

[(1, 21503041), (7, 3071863), (19, 1131739), (107, 200963), (133, 161677), (749, 28709), (1511, 14231), (2033, 10577)]