640991123

素因数分解:

${\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{173}}^1\times {\mathrm{2543}}^1$

素因数の和:2794

約数の個数: 16

約数和(自身を含む): 679919616

約数和(自身を除く): 38928493

約数列:

[1, 31, 47, 173, 1457, 2543, 5363, 8131, 78833, 119521, 252061, 439939, 3705151, 13638109, 20677133, 640991123]

約数ペア:

[(1, 640991123), (31, 20677133), (47, 13638109), (173, 3705151), (1457, 439939), (2543, 252061), (5363, 119521), (8131, 78833)]