81295319

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{223}}^1\times {\mathrm{2741}}^1$

素因数の和:2990

約数の個数: 16

約数和(自身を含む): 98273280

約数和(自身を除く): 16977961

約数列:

[1, 7, 19, 133, 223, 1561, 2741, 4237, 19187, 29659, 52079, 364553, 611243, 4278701, 11613617, 81295319]

約数ペア:

[(1, 81295319), (7, 11613617), (19, 4278701), (133, 611243), (223, 364553), (1561, 52079), (2741, 29659), (4237, 19187)]