21913857

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{6563}}^1$

素因数の和:6629

約数の個数: 24

約数和(自身を含む): 36863424

約数和(自身を除く): 14949567

約数列:

[1, 3, 7, 9, 21, 53, 63, 159, 371, 477, 1113, 3339, 6563, 19689, 45941, 59067, 137823, 347839, 413469, 1043517, 2434873, 3130551, 7304619, 21913857]

約数ペア:

[(1, 21913857), (3, 7304619), (7, 3130551), (9, 2434873), (21, 1043517), (53, 413469), (63, 347839), (159, 137823), (371, 59067), (477, 45941), (1113, 19689), (3339, 6563)]