2221520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{3967}}^1$

素因数の和:3987

約数の個数: 40

約数和(自身を含む): 5904384

約数和(自身を除く): 3682864

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 3967, 7934, 15868, 19835, 27769, 31736, 39670, 55538, 63472, 79340, 111076, 138845, 158680, 222152, 277690, 317360, 444304, 555380, 1110760, 2221520]

約数ペア:

[(1, 2221520), (2, 1110760), (4, 555380), (5, 444304), (7, 317360), (8, 277690), (10, 222152), (14, 158680), (16, 138845), (20, 111076), (28, 79340), (35, 63472), (40, 55538), (56, 39670), (70, 31736), (80, 27769), (112, 19835), (140, 15868), (280, 7934), (560, 3967)]