21503804

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{33391}}^1$

素因数の和:33425

約数の個数: 24

約数和(自身を含む): 44878848

約数和(自身を除く): 23375044

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644, 33391, 66782, 133564, 233737, 467474, 767993, 934948, 1535986, 3071972, 5375951, 10751902, 21503804]

約数ペア:

[(1, 21503804), (2, 10751902), (4, 5375951), (7, 3071972), (14, 1535986), (23, 934948), (28, 767993), (46, 467474), (92, 233737), (161, 133564), (322, 66782), (644, 33391)]