21310972

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{5387}}^1$

素因数の和:5457

約数の個数: 24

約数和(自身を含む): 39828096

約数和(自身を除く): 18517124

約数列:

[1, 2, 4, 23, 43, 46, 86, 92, 172, 989, 1978, 3956, 5387, 10774, 21548, 123901, 231641, 247802, 463282, 495604, 926564, 5327743, 10655486, 21310972]

約数ペア:

[(1, 21310972), (2, 10655486), (4, 5327743), (23, 926564), (43, 495604), (46, 463282), (86, 247802), (92, 231641), (172, 123901), (989, 21548), (1978, 10774), (3956, 5387)]