21364135

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{131}}^1\times {\mathrm{193}}^1$

素因数の和:355

約数の個数: 24

約数和(自身を含む): 28117584

約数和(自身を除く): 6753449

約数列:

[1, 5, 13, 65, 131, 169, 193, 655, 845, 965, 1703, 2509, 8515, 12545, 22139, 25283, 32617, 110695, 126415, 163085, 328679, 1643395, 4272827, 21364135]

約数ペア:

[(1, 21364135), (5, 4272827), (13, 1643395), (65, 328679), (131, 163085), (169, 126415), (193, 110695), (655, 32617), (845, 25283), (965, 22139), (1703, 12545), (2509, 8515)]