128909620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{920783}}^1$

素因数の和:920799

約数の個数: 24

約数和(自身を含む): 309383424

約数和(自身を除く): 180473804

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 920783, 1841566, 3683132, 4603915, 6445481, 9207830, 12890962, 18415660, 25781924, 32227405, 64454810, 128909620]

約数ペア:

[(1, 128909620), (2, 64454810), (4, 32227405), (5, 25781924), (7, 18415660), (10, 12890962), (14, 9207830), (20, 6445481), (28, 4603915), (35, 3683132), (70, 1841566), (140, 920783)]