20915223

素因数分解:

$3^1\times 7^1\times {\mathrm{419}}^1\times {\mathrm{2377}}^1$

素因数の和:2806

約数の個数: 16

約数和(自身を含む): 31960320

約数和(自身を除く): 11045097

約数列:

[1, 3, 7, 21, 419, 1257, 2377, 2933, 7131, 8799, 16639, 49917, 995963, 2987889, 6971741, 20915223]

約数ペア:

[(1, 20915223), (3, 6971741), (7, 2987889), (21, 995963), (419, 49917), (1257, 16639), (2377, 8799), (2933, 7131)]