21685391

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{577}}^1$

素因数の和:663

約数の個数: 24

約数和(自身を含む): 27674640

約数和(自身を除く): 5989249

約数列:

[1, 7, 13, 49, 59, 91, 413, 577, 637, 767, 2891, 4039, 5369, 7501, 28273, 34043, 37583, 52507, 238301, 367549, 442559, 1668107, 3097913, 21685391]

約数ペア:

[(1, 21685391), (7, 3097913), (13, 1668107), (49, 442559), (59, 367549), (91, 238301), (413, 52507), (577, 37583), (637, 34043), (767, 28273), (2891, 7501), (4039, 5369)]