211257215

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{4663}}^1$

素因数の和:4739

約数の個数: 32

約数和(自身を含む): 296182656

約数和(自身を除く): 84925441

約数列:

[1, 5, 13, 17, 41, 65, 85, 205, 221, 533, 697, 1105, 2665, 3485, 4663, 9061, 23315, 45305, 60619, 79271, 191183, 303095, 396355, 955915, 1030523, 2485379, 3250111, 5152615, 12426895, 16250555, 42251443, 211257215]

約数ペア:

[(1, 211257215), (5, 42251443), (13, 16250555), (17, 12426895), (41, 5152615), (65, 3250111), (85, 2485379), (205, 1030523), (221, 955915), (533, 396355), (697, 303095), (1105, 191183), (2665, 79271), (3485, 60619), (4663, 45305), (9061, 23315)]