21499317

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{5987}}^1$

素因数の和:6022

約数の個数: 32

約数和(自身を含む): 38323200

約数和(自身を除く): 16823883

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 133, 171, 189, 399, 513, 1197, 3591, 5987, 17961, 41909, 53883, 113753, 125727, 161649, 341259, 377181, 796271, 1023777, 1131543, 2388813, 3071331, 7166439, 21499317]

約数ペア:

[(1, 21499317), (3, 7166439), (7, 3071331), (9, 2388813), (19, 1131543), (21, 1023777), (27, 796271), (57, 377181), (63, 341259), (133, 161649), (171, 125727), (189, 113753), (399, 53883), (513, 41909), (1197, 17961), (3591, 5987)]