21080595

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{229}}^1$

素因数の和:292

約数の個数: 48

約数和(自身を含む): 37856160

約数和(自身を除く): 16775565

約数列:

[1, 3, 5, 15, 17, 19, 51, 57, 85, 95, 229, 255, 285, 323, 361, 687, 969, 1083, 1145, 1615, 1805, 3435, 3893, 4351, 4845, 5415, 6137, 11679, 13053, 18411, 19465, 21755, 30685, 58395, 65265, 73967, 82669, 92055, 221901, 248007, 369835, 413345, 1109505, 1240035, 1405373, 4216119, 7026865, 21080595]

約数ペア:

[(1, 21080595), (3, 7026865), (5, 4216119), (15, 1405373), (17, 1240035), (19, 1109505), (51, 413345), (57, 369835), (85, 248007), (95, 221901), (229, 92055), (255, 82669), (285, 73967), (323, 65265), (361, 58395), (687, 30685), (969, 21755), (1083, 19465), (1145, 18411), (1615, 13053), (1805, 11679), (3435, 6137), (3893, 5415), (4351, 4845)]