21000657699

素因数分解:

$3^4\times 7^2\times {\mathrm{5291171}}^1$

素因数の和:5291197

約数の個数: 30

約数和(自身を含む): 36493213284

約数和(自身を除く): 15492555585

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323, 3969, 5291171, 15873513, 37038197, 47620539, 111114591, 142861617, 259267379, 333343773, 428584851, 777802137, 1000031319, 2333406411, 3000093957, 7000219233, 21000657699]

約数ペア:

[(1, 21000657699), (3, 7000219233), (7, 3000093957), (9, 2333406411), (21, 1000031319), (27, 777802137), (49, 428584851), (63, 333343773), (81, 259267379), (147, 142861617), (189, 111114591), (441, 47620539), (567, 37038197), (1323, 15873513), (3969, 5291171)]