71940981

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1\times {\mathrm{593}}^1$

素因数の和:765

約数の個数: 32

約数和(自身を含む): 112907520

約数和(自身を除く): 40966539

約数列:

[1, 3, 7, 21, 53, 109, 159, 327, 371, 593, 763, 1113, 1779, 2289, 4151, 5777, 12453, 17331, 31429, 40439, 64637, 94287, 121317, 193911, 220003, 452459, 660009, 1357377, 3425761, 10277283, 23980327, 71940981]

約数ペア:

[(1, 71940981), (3, 23980327), (7, 10277283), (21, 3425761), (53, 1357377), (109, 660009), (159, 452459), (327, 220003), (371, 193911), (593, 121317), (763, 94287), (1113, 64637), (1779, 40439), (2289, 31429), (4151, 17331), (5777, 12453)]