640371339

素因数分解:

$3^5\times {\mathrm{113}}^1\times {\mathrm{23321}}^1$

素因数の和:23449

約数の個数: 24

約数和(自身を含む): 967769712

約数和(自身を除く): 327398373

約数列:

[1, 3, 9, 27, 81, 113, 243, 339, 1017, 3051, 9153, 23321, 27459, 69963, 209889, 629667, 1889001, 2635273, 5667003, 7905819, 23717457, 71152371, 213457113, 640371339]

約数ペア:

[(1, 640371339), (3, 213457113), (9, 71152371), (27, 23717457), (81, 7905819), (113, 5667003), (243, 2635273), (339, 1889001), (1017, 629667), (3051, 209889), (9153, 69963), (23321, 27459)]