28156807

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^2$

素因数の和:199

約数の個数: 24

約数和(自身を含む): 34864128

約数和(自身を除く): 6707321

約数列:

[1, 7, 23, 47, 61, 161, 329, 427, 1081, 1403, 2867, 3721, 7567, 9821, 20069, 26047, 65941, 85583, 174887, 461587, 599081, 1224209, 4022401, 28156807]

約数ペア:

[(1, 28156807), (7, 4022401), (23, 1224209), (47, 599081), (61, 461587), (161, 174887), (329, 85583), (427, 65941), (1081, 26047), (1403, 20069), (2867, 9821), (3721, 7567)]