207718461

素因数分解:

$3^2\times {\mathrm{17}}^2\times {\mathrm{79861}}^1$

素因数の和:79901

約数の個数: 18

約数和(自身を含む): 318729242

約数和(自身を除く): 111010781

約数列:

[1, 3, 9, 17, 51, 153, 289, 867, 2601, 79861, 239583, 718749, 1357637, 4072911, 12218733, 23079829, 69239487, 207718461]

約数ペア:

[(1, 207718461), (3, 69239487), (9, 23079829), (17, 12218733), (51, 4072911), (153, 1357637), (289, 718749), (867, 239583), (2601, 79861)]