81299710

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{2543}}^1$

素因数の和:2712

約数の個数: 32

約数和(自身を含む): 153861120

約数和(自身を除く): 72561410

約数列:

[1, 2, 5, 10, 23, 46, 115, 139, 230, 278, 695, 1390, 2543, 3197, 5086, 6394, 12715, 15985, 25430, 31970, 58489, 116978, 292445, 353477, 584890, 706954, 1767385, 3534770, 8129971, 16259942, 40649855, 81299710]

約数ペア:

[(1, 81299710), (2, 40649855), (5, 16259942), (10, 8129971), (23, 3534770), (46, 1767385), (115, 706954), (139, 584890), (230, 353477), (278, 292445), (695, 116978), (1390, 58489), (2543, 31970), (3197, 25430), (5086, 15985), (6394, 12715)]