21072163

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{7699}}^1$

素因数の和:7746

約数の個数: 16

約数和(自身を含む): 26611200

約数和(自身を除く): 5539037

約数列:

[1, 7, 17, 23, 119, 161, 391, 2737, 7699, 53893, 130883, 177077, 916181, 1239539, 3010309, 21072163]

約数ペア:

[(1, 21072163), (7, 3010309), (17, 1239539), (23, 916181), (119, 177077), (161, 130883), (391, 53893), (2737, 7699)]