20145321

素因数分解:

$3^3\times 7^2\times {\mathrm{15227}}^1$

素因数の和:15250

約数の個数: 24

約数和(自身を含む): 34719840

約数和(自身を除く): 14574519

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 15227, 45681, 106589, 137043, 319767, 411129, 746123, 959301, 2238369, 2877903, 6715107, 20145321]

約数ペア:

[(1, 20145321), (3, 6715107), (7, 2877903), (9, 2238369), (21, 959301), (27, 746123), (49, 411129), (63, 319767), (147, 137043), (189, 106589), (441, 45681), (1323, 15227)]