2779021

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{421}}^1$

素因数の和:492

約数の個数: 16

約数和(自身を含む): 3403008

約数和(自身を除く): 623987

約数列:

[1, 7, 23, 41, 161, 287, 421, 943, 2947, 6601, 9683, 17261, 67781, 120827, 397003, 2779021]

約数ペア:

[(1, 2779021), (7, 397003), (23, 120827), (41, 67781), (161, 17261), (287, 9683), (421, 6601), (943, 2947)]