21427973

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{7829}}^1$

素因数の和:7876

約数の個数: 16

約数和(自身を含む): 27060480

約数和(自身を除く): 5632507

約数列:

[1, 7, 17, 23, 119, 161, 391, 2737, 7829, 54803, 133093, 180067, 931651, 1260469, 3061139, 21427973]

約数ペア:

[(1, 21427973), (7, 3061139), (17, 1260469), (23, 931651), (119, 180067), (161, 133093), (391, 54803), (2737, 7829)]