21758415

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{4409}}^1$

素因数の和:4471

約数の個数: 32

約数和(自身を含む): 40642560

約数和(自身を除く): 18884145

約数列:

[1, 3, 5, 7, 15, 21, 35, 47, 105, 141, 235, 329, 705, 987, 1645, 4409, 4935, 13227, 22045, 30863, 66135, 92589, 154315, 207223, 462945, 621669, 1036115, 1450561, 3108345, 4351683, 7252805, 21758415]

約数ペア:

[(1, 21758415), (3, 7252805), (5, 4351683), (7, 3108345), (15, 1450561), (21, 1036115), (35, 621669), (47, 462945), (105, 207223), (141, 154315), (235, 92589), (329, 66135), (705, 30863), (987, 22045), (1645, 13227), (4409, 4935)]