20379555

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2087}}^1$

素因数の和:2136

約数の個数: 48

約数和(自身を含む): 41693184

約数和(自身を除く): 21313629

約数列:

[1, 3, 5, 7, 9, 15, 21, 31, 35, 45, 63, 93, 105, 155, 217, 279, 315, 465, 651, 1085, 1395, 1953, 2087, 3255, 6261, 9765, 10435, 14609, 18783, 31305, 43827, 64697, 73045, 93915, 131481, 194091, 219135, 323485, 452879, 582273, 657405, 970455, 1358637, 2264395, 2911365, 4075911, 6793185, 20379555]

約数ペア:

[(1, 20379555), (3, 6793185), (5, 4075911), (7, 2911365), (9, 2264395), (15, 1358637), (21, 970455), (31, 657405), (35, 582273), (45, 452879), (63, 323485), (93, 219135), (105, 194091), (155, 131481), (217, 93915), (279, 73045), (315, 64697), (465, 43827), (651, 31305), (1085, 18783), (1395, 14609), (1953, 10435), (2087, 9765), (3255, 6261)]