21491407

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{4603}}^1$

素因数の和:4662

約数の個数: 16

約数和(自身を含む): 26519040

約数和(自身を除く): 5027633

約数列:

[1, 7, 23, 29, 161, 203, 667, 4603, 4669, 32221, 105869, 133487, 741083, 934409, 3070201, 21491407]

約数ペア:

[(1, 21491407), (7, 3070201), (23, 934409), (29, 741083), (161, 133487), (203, 105869), (667, 32221), (4603, 4669)]