128792860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{919949}}^1$

素因数の和:919965

約数の個数: 24

約数和(自身を含む): 309103200

約数和(自身を除く): 180310340

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 919949, 1839898, 3679796, 4599745, 6439643, 9199490, 12879286, 18398980, 25758572, 32198215, 64396430, 128792860]

約数ペア:

[(1, 128792860), (2, 64396430), (4, 32198215), (5, 25758572), (7, 18398980), (10, 12879286), (14, 9199490), (20, 6439643), (28, 4599745), (35, 3679796), (70, 1839898), (140, 919949)]