78808401

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{20507}}^1$

素因数の和:20581

約数の個数: 24

約数和(自身を含む): 132235584

約数和(自身を除く): 53427183

約数列:

[1, 3, 7, 9, 21, 61, 63, 183, 427, 549, 1281, 3843, 20507, 61521, 143549, 184563, 430647, 1250927, 1291941, 3752781, 8756489, 11258343, 26269467, 78808401]

約数ペア:

[(1, 78808401), (3, 26269467), (7, 11258343), (9, 8756489), (21, 3752781), (61, 1291941), (63, 1250927), (183, 430647), (427, 184563), (549, 143549), (1281, 61521), (3843, 20507)]