19805409

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{1553}}^1$

素因数の和:1681

約数の個数: 24

約数和(自身を含む): 31111080

約数和(自身を除く): 11305671

約数列:

[1, 3, 9, 13, 39, 109, 117, 327, 981, 1417, 1553, 4251, 4659, 12753, 13977, 20189, 60567, 169277, 181701, 507831, 1523493, 2200601, 6601803, 19805409]

約数ペア:

[(1, 19805409), (3, 6601803), (9, 2200601), (13, 1523493), (39, 507831), (109, 181701), (117, 169277), (327, 60567), (981, 20189), (1417, 13977), (1553, 12753), (4251, 4659)]