90778520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{324209}}^1$

素因数の和:324227

約数の個数: 32

約数和(自身を含む): 233431200

約数和(自身を除く): 142652680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 324209, 648418, 1296836, 1621045, 2269463, 2593672, 3242090, 4538926, 6484180, 9077852, 11347315, 12968360, 18155704, 22694630, 45389260, 90778520]

約数ペア:

[(1, 90778520), (2, 45389260), (4, 22694630), (5, 18155704), (7, 12968360), (8, 11347315), (10, 9077852), (14, 6484180), (20, 4538926), (28, 3242090), (35, 2593672), (40, 2269463), (56, 1621045), (70, 1296836), (140, 648418), (280, 324209)]