21799984

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{80147}}^1$

素因数の和:80172

約数の個数: 20

約数和(自身を含む): 44722584

約数和(自身を除く): 22922600

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 80147, 160294, 320588, 641176, 1282352, 1362499, 2724998, 5449996, 10899992, 21799984]

約数ペア:

[(1, 21799984), (2, 10899992), (4, 5449996), (8, 2724998), (16, 1362499), (17, 1282352), (34, 641176), (68, 320588), (136, 160294), (272, 80147)]