285131

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^2$

素因数の和:71

約数の個数: 18

約数和(自身を含む): 378252

約数和(自身を除く): 93121

約数列:

[1, 7, 11, 23, 49, 77, 161, 253, 529, 539, 1127, 1771, 3703, 5819, 12397, 25921, 40733, 285131]

約数ペア:

[(1, 285131), (7, 40733), (11, 25921), (23, 12397), (49, 5819), (77, 3703), (161, 1771), (253, 1127), (529, 539)]