81840278

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{14243}}^1$

素因数の和:14288

約数の個数: 24

約数和(自身を含む): 140759208

約数和(自身を除く): 58918930

約数列:

[1, 2, 13, 17, 26, 34, 169, 221, 338, 442, 2873, 5746, 14243, 28486, 185159, 242131, 370318, 484262, 2407067, 3147703, 4814134, 6295406, 40920139, 81840278]

約数ペア:

[(1, 81840278), (2, 40920139), (13, 6295406), (17, 4814134), (26, 3147703), (34, 2407067), (169, 484262), (221, 370318), (338, 242131), (442, 185159), (2873, 28486), (5746, 14243)]