129968139

素因数分解:

$3^1\times 7^2\times {\mathrm{521}}^1\times {\mathrm{1697}}^1$

素因数の和:2235

約数の個数: 24

約数和(自身を含む): 202089168

約数和(自身を除く): 72121029

約数列:

[1, 3, 7, 21, 49, 147, 521, 1563, 1697, 3647, 5091, 10941, 11879, 25529, 35637, 76587, 83153, 249459, 884137, 2652411, 6188959, 18566877, 43322713, 129968139]

約数ペア:

[(1, 129968139), (3, 43322713), (7, 18566877), (21, 6188959), (49, 2652411), (147, 884137), (521, 249459), (1563, 83153), (1697, 76587), (3647, 35637), (5091, 25529), (10941, 11879)]