27628209

素因数分解:

$3^4\times 7^2\times {\mathrm{6961}}^1$

素因数の和:6987

約数の個数: 30

約数和(自身を含む): 48016914

約数和(自身を除く): 20388705

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323, 3969, 6961, 20883, 48727, 62649, 146181, 187947, 341089, 438543, 563841, 1023267, 1315629, 3069801, 3946887, 9209403, 27628209]

約数ペア:

[(1, 27628209), (3, 9209403), (7, 3946887), (9, 3069801), (21, 1315629), (27, 1023267), (49, 563841), (63, 438543), (81, 341089), (147, 187947), (189, 146181), (441, 62649), (567, 48727), (1323, 20883), (3969, 6961)]