205787309

素因数分解:

$7^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{347}}^1$

素因数の和:407

約数の個数: 40

約数和(自身を含む): 272929440

約数和(自身を除く): 67142131

約数列:

[1, 7, 13, 19, 49, 91, 133, 247, 343, 347, 637, 931, 1729, 2401, 2429, 4459, 4511, 6517, 6593, 12103, 17003, 31213, 31577, 45619, 46151, 84721, 85709, 119021, 221039, 323057, 593047, 599963, 833147, 1547273, 2261399, 4199741, 10830911, 15829793, 29398187, 205787309]

約数ペア:

[(1, 205787309), (7, 29398187), (13, 15829793), (19, 10830911), (49, 4199741), (91, 2261399), (133, 1547273), (247, 833147), (343, 599963), (347, 593047), (637, 323057), (931, 221039), (1729, 119021), (2401, 85709), (2429, 84721), (4459, 46151), (4511, 45619), (6517, 31577), (6593, 31213), (12103, 17003)]