19957496

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{191899}}^1$

素因数の和:191918

約数の個数: 16

約数和(自身を含む): 40299000

約数和(自身を除く): 20341504

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 191899, 383798, 767596, 1535192, 2494687, 4989374, 9978748, 19957496]

約数ペア:

[(1, 19957496), (2, 9978748), (4, 4989374), (8, 2494687), (13, 1535192), (26, 767596), (52, 383798), (104, 191899)]