11971905

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^2\times {\mathrm{53}}^1$

素因数の和:146

約数の個数: 48

約数和(自身を含む): 21881664

約数和(自身を除く): 9909759

約数列:

[1, 3, 5, 11, 15, 33, 37, 53, 55, 111, 159, 165, 185, 265, 407, 555, 583, 795, 1221, 1369, 1749, 1961, 2035, 2915, 4107, 5883, 6105, 6845, 8745, 9805, 15059, 20535, 21571, 29415, 45177, 64713, 72557, 75295, 107855, 217671, 225885, 323565, 362785, 798127, 1088355, 2394381, 3990635, 11971905]

約数ペア:

[(1, 11971905), (3, 3990635), (5, 2394381), (11, 1088355), (15, 798127), (33, 362785), (37, 323565), (53, 225885), (55, 217671), (111, 107855), (159, 75295), (165, 72557), (185, 64713), (265, 45177), (407, 29415), (555, 21571), (583, 20535), (795, 15059), (1221, 9805), (1369, 8745), (1749, 6845), (1961, 6105), (2035, 5883), (2915, 4107)]