81053560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{289477}}^1$

素因数の和:289495

約数の個数: 32

約数和(自身を含む): 208424160

約数和(自身を除く): 127370600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 289477, 578954, 1157908, 1447385, 2026339, 2315816, 2894770, 4052678, 5789540, 8105356, 10131695, 11579080, 16210712, 20263390, 40526780, 81053560]

約数ペア:

[(1, 81053560), (2, 40526780), (4, 20263390), (5, 16210712), (7, 11579080), (8, 10131695), (10, 8105356), (14, 5789540), (20, 4052678), (28, 2894770), (35, 2315816), (40, 2026339), (56, 1447385), (70, 1157908), (140, 578954), (280, 289477)]