20399085

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2089}}^1$

素因数の和:2138

約数の個数: 48

約数和(自身を含む): 41733120

約数和(自身を除く): 21334035

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, 2089, 3255, 6267, 9765, 10445, 14623, 18801, 31335, 43869, 64759, 73115, 94005, 131607, 194277, 219345, 323795, 453313, 582831, 658035, 971385, 1359939, 2266565, 2914155, 4079817, 6799695, 20399085]

約数ペア:

[(1, 20399085), (3, 6799695), (5, 4079817), (7, 2914155), (9, 2266565), (15, 1359939), (21, 971385), (31, 658035), (35, 582831), (45, 453313), (63, 323795), (93, 219345), (105, 194277), (155, 131607), (217, 94005), (279, 73115), (315, 64759), (465, 43869), (651, 31335), (1085, 18801), (1395, 14623), (1953, 10445), (2089, 9765), (3255, 6267)]