221344263

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{81707}}^1$

素因数の和:81763

約数の個数: 24

約数和(自身を含む): 373895808

約数和(自身を除く): 152551545

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 301, 387, 903, 2709, 81707, 245121, 571949, 735363, 1715847, 3513401, 5147541, 10540203, 24593807, 31620609, 73781421, 221344263]

約数ペア:

[(1, 221344263), (3, 73781421), (7, 31620609), (9, 24593807), (21, 10540203), (43, 5147541), (63, 3513401), (129, 1715847), (301, 735363), (387, 571949), (903, 245121), (2709, 81707)]