21980398

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{7867}}^1$

素因数の和:8007

約数の個数: 16

約数和(自身を含む): 36255744

約数和(自身を除く): 14275346

約数列:

[1, 2, 11, 22, 127, 254, 1397, 2794, 7867, 15734, 86537, 173074, 999109, 1998218, 10990199, 21980398]

約数ペア:

[(1, 21980398), (2, 10990199), (11, 1998218), (22, 999109), (127, 173074), (254, 86537), (1397, 15734), (2794, 7867)]