21237741

素因数分解:

$3^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{3037}}^1$

素因数の和:3090

約数の個数: 32

約数和(自身を含む): 36942080

約数和(自身を除く): 15704339

約数列:

[1, 3, 7, 9, 21, 27, 37, 63, 111, 189, 259, 333, 777, 999, 2331, 3037, 6993, 9111, 21259, 27333, 63777, 81999, 112369, 191331, 337107, 573993, 786583, 1011321, 2359749, 3033963, 7079247, 21237741]

約数ペア:

[(1, 21237741), (3, 7079247), (7, 3033963), (9, 2359749), (21, 1011321), (27, 786583), (37, 573993), (63, 337107), (111, 191331), (189, 112369), (259, 81999), (333, 63777), (777, 27333), (999, 21259), (2331, 9111), (3037, 6993)]