21728861

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{9103}}^1$

素因数の和:9152

約数の個数: 16

約数和(自身を含む): 27967488

約数和(自身を除く): 6238627

約数列:

[1, 7, 11, 31, 77, 217, 341, 2387, 9103, 63721, 100133, 282193, 700931, 1975351, 3104123, 21728861]

約数ペア:

[(1, 21728861), (7, 3104123), (11, 1975351), (31, 700931), (77, 282193), (217, 100133), (341, 63721), (2387, 9103)]