21389397

素因数分解:

$3^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1\times {\mathrm{439}}^1$

素因数の和:700

約数の個数: 16

約数和(自身を含む): 29040000

約数和(自身を除く): 7650603

約数列:

[1, 3, 109, 149, 327, 439, 447, 1317, 16241, 47851, 48723, 65411, 143553, 196233, 7129799, 21389397]

約数ペア:

[(1, 21389397), (3, 7129799), (109, 196233), (149, 143553), (327, 65411), (439, 48723), (447, 47851), (1317, 16241)]