19725615

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{4817}}^1$

素因数の和:4848

約数の個数: 48

約数和(自身を含む): 42090048

約数和(自身を除く): 22364433

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 35, 39, 45, 63, 65, 91, 105, 117, 195, 273, 315, 455, 585, 819, 1365, 4095, 4817, 14451, 24085, 33719, 43353, 62621, 72255, 101157, 168595, 187863, 216765, 303471, 313105, 438347, 505785, 563589, 939315, 1315041, 1517355, 2191735, 2817945, 3945123, 6575205, 19725615]

約数ペア:

[(1, 19725615), (3, 6575205), (5, 3945123), (7, 2817945), (9, 2191735), (13, 1517355), (15, 1315041), (21, 939315), (35, 563589), (39, 505785), (45, 438347), (63, 313105), (65, 303471), (91, 216765), (105, 187863), (117, 168595), (195, 101157), (273, 72255), (315, 62621), (455, 43353), (585, 33719), (819, 24085), (1365, 14451), (4095, 4817)]