21395465

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{797}}^1$

素因数の和:881

約数の個数: 32

約数和(自身を含む): 32175360

約数和(自身を除く): 10779895

約数列:

[1, 5, 7, 13, 35, 59, 65, 91, 295, 413, 455, 767, 797, 2065, 3835, 3985, 5369, 5579, 10361, 26845, 27895, 47023, 51805, 72527, 235115, 329161, 362635, 611299, 1645805, 3056495, 4279093, 21395465]

約数ペア:

[(1, 21395465), (5, 4279093), (7, 3056495), (13, 1645805), (35, 611299), (59, 362635), (65, 329161), (91, 235115), (295, 72527), (413, 51805), (455, 47023), (767, 27895), (797, 26845), (2065, 10361), (3835, 5579), (3985, 5369)]