15721979

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{877}}^1$

素因数の和:1094

約数の個数: 16

約数和(自身を含む): 19470528

約数和(自身を除く): 3748549

約数列:

[1, 7, 13, 91, 197, 877, 1379, 2561, 6139, 11401, 17927, 79807, 172769, 1209383, 2245997, 15721979]

約数ペア:

[(1, 15721979), (7, 2245997), (13, 1209383), (91, 172769), (197, 79807), (877, 17927), (1379, 11401), (2561, 6139)]