21155238

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{90407}}^1$

素因数の和:90428

約数の個数: 24

約数和(自身を含む): 49362768

約数和(自身を除く): 28207530

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 234, 90407, 180814, 271221, 542442, 813663, 1175291, 1627326, 2350582, 3525873, 7051746, 10577619, 21155238]

約数ペア:

[(1, 21155238), (2, 10577619), (3, 7051746), (6, 3525873), (9, 2350582), (13, 1627326), (18, 1175291), (26, 813663), (39, 542442), (78, 271221), (117, 180814), (234, 90407)]