397996963

素因数分解:

$7^4\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{311}}^1$

素因数の和:393

約数の個数: 40

約数和(自身を含む): 513860256

約数和(自身を除く): 115863293

約数列:

[1, 7, 13, 41, 49, 91, 287, 311, 343, 533, 637, 2009, 2177, 2401, 3731, 4043, 4459, 12751, 14063, 15239, 26117, 28301, 31213, 89257, 98441, 106673, 165763, 182819, 198107, 624799, 746711, 1160341, 1279733, 1386749, 4373593, 8122387, 9707243, 30615151, 56856709, 397996963]

約数ペア:

[(1, 397996963), (7, 56856709), (13, 30615151), (41, 9707243), (49, 8122387), (91, 4373593), (287, 1386749), (311, 1279733), (343, 1160341), (533, 746711), (637, 624799), (2009, 198107), (2177, 182819), (2401, 165763), (3731, 106673), (4043, 98441), (4459, 89257), (12751, 31213), (14063, 28301), (15239, 26117)]