1520393973

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1956749}}^1$

素因数の和:1956796

約数の個数: 16

約数和(自身を含む): 2379408000

約数和(自身を除く): 859014027

約数列:

[1, 3, 7, 21, 37, 111, 259, 777, 1956749, 5870247, 13697243, 41091729, 72399713, 217199139, 506797991, 1520393973]

約数ペア:

[(1, 1520393973), (3, 506797991), (7, 217199139), (21, 72399713), (37, 41091729), (111, 13697243), (259, 5870247), (777, 1956749)]