639620788

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{2707}}^1\times {\mathrm{3109}}^1$

素因数の和:5839

約数の個数: 24

約数和(自身を含む): 1179063200

約数和(自身を除く): 539442412

約数列:

[1, 2, 4, 19, 38, 76, 2707, 3109, 5414, 6218, 10828, 12436, 51433, 59071, 102866, 118142, 205732, 236284, 8416063, 16832126, 33664252, 159905197, 319810394, 639620788]

約数ペア:

[(1, 639620788), (2, 319810394), (4, 159905197), (19, 33664252), (38, 16832126), (76, 8416063), (2707, 236284), (3109, 205732), (5414, 118142), (6218, 102866), (10828, 59071), (12436, 51433)]