21783795

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^2$

素因数の和:172

約数の個数: 48

約数和(自身を含む): 39578112

約数和(自身を除く): 17794317

約数列:

[1, 3, 5, 11, 15, 33, 47, 53, 55, 141, 159, 165, 235, 265, 517, 583, 705, 795, 1551, 1749, 2491, 2585, 2809, 2915, 7473, 7755, 8427, 8745, 12455, 14045, 27401, 30899, 37365, 42135, 82203, 92697, 132023, 137005, 154495, 396069, 411015, 463485, 660115, 1452253, 1980345, 4356759, 7261265, 21783795]

約数ペア:

[(1, 21783795), (3, 7261265), (5, 4356759), (11, 1980345), (15, 1452253), (33, 660115), (47, 463485), (53, 411015), (55, 396069), (141, 154495), (159, 137005), (165, 132023), (235, 92697), (265, 82203), (517, 42135), (583, 37365), (705, 30899), (795, 27401), (1551, 14045), (1749, 12455), (2491, 8745), (2585, 8427), (2809, 7755), (2915, 7473)]