80937640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{289063}}^1$

素因数の和:289081

約数の個数: 32

約数和(自身を含む): 208126080

約数和(自身を除く): 127188440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 289063, 578126, 1156252, 1445315, 2023441, 2312504, 2890630, 4046882, 5781260, 8093764, 10117205, 11562520, 16187528, 20234410, 40468820, 80937640]

約数ペア:

[(1, 80937640), (2, 40468820), (4, 20234410), (5, 16187528), (7, 11562520), (8, 10117205), (10, 8093764), (14, 5781260), (20, 4046882), (28, 2890630), (35, 2312504), (40, 2023441), (56, 1445315), (70, 1156252), (140, 578126), (280, 289063)]