208778877

素因数分解:

$3^4\times {\mathrm{587}}^1\times {\mathrm{4391}}^1$

素因数の和:4990

約数の個数: 20

約数和(自身を含む): 312482016

約数和(自身を除く): 103703139

約数列:

[1, 3, 9, 27, 81, 587, 1761, 4391, 5283, 13173, 15849, 39519, 47547, 118557, 355671, 2577517, 7732551, 23197653, 69592959, 208778877]

約数ペア:

[(1, 208778877), (3, 69592959), (9, 23197653), (27, 7732551), (81, 2577517), (587, 355671), (1761, 118557), (4391, 47547), (5283, 39519), (13173, 15849)]