20871735

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47981}}^1$

素因数の和:48018

約数の個数: 16

約数和(自身を含む): 34547040

約数和(自身を除く): 13675305

約数列:

[1, 3, 5, 15, 29, 87, 145, 435, 47981, 143943, 239905, 719715, 1391449, 4174347, 6957245, 20871735]

約数ペア:

[(1, 20871735), (3, 6957245), (5, 4174347), (15, 1391449), (29, 719715), (87, 239905), (145, 143943), (435, 47981)]