21248409

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{11119}}^1$

素因数の和:11149

約数の個数: 24

約数和(自身を含む): 35495040

約数和(自身を除く): 14246631

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 11119, 33357, 77833, 144547, 233499, 433641, 544831, 1011829, 1634493, 3035487, 7082803, 21248409]

約数ペア:

[(1, 21248409), (3, 7082803), (7, 3035487), (13, 1634493), (21, 1011829), (39, 544831), (49, 433641), (91, 233499), (147, 144547), (273, 77833), (637, 33357), (1911, 11119)]