640934979

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{73091}}^1$

素因数の和:73210

約数の個数: 16

約数和(自身を含む): 888798720

約数和(自身を除く): 247863741

約数列:

[1, 3, 37, 79, 111, 237, 2923, 8769, 73091, 219273, 2704367, 5774189, 8113101, 17322567, 213644993, 640934979]

約数ペア:

[(1, 640934979), (3, 213644993), (37, 17322567), (79, 8113101), (111, 5774189), (237, 2704367), (2923, 219273), (8769, 73091)]