81973605

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{307}}^1\times {\mathrm{2543}}^1$

素因数の和:2865

約数の個数: 32

約数和(自身を含む): 150441984

約数和(自身を除く): 68468379

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 307, 921, 1535, 2149, 2543, 4605, 6447, 7629, 10745, 12715, 17801, 32235, 38145, 53403, 89005, 267015, 780701, 2342103, 3903505, 5464907, 11710515, 16394721, 27324535, 81973605]

約数ペア:

[(1, 81973605), (3, 27324535), (5, 16394721), (7, 11710515), (15, 5464907), (21, 3903505), (35, 2342103), (105, 780701), (307, 267015), (921, 89005), (1535, 53403), (2149, 38145), (2543, 32235), (4605, 17801), (6447, 12715), (7629, 10745)]