19796144

素因数分解:

$2^4\times {\mathrm{109}}^1\times {\mathrm{11351}}^1$

素因数の和:11468

約数の個数: 20

約数和(自身を含む): 38710320

約数和(自身を除く): 18914176

約数列:

[1, 2, 4, 8, 16, 109, 218, 436, 872, 1744, 11351, 22702, 45404, 90808, 181616, 1237259, 2474518, 4949036, 9898072, 19796144]

約数ペア:

[(1, 19796144), (2, 9898072), (4, 4949036), (8, 2474518), (16, 1237259), (109, 181616), (218, 90808), (436, 45404), (872, 22702), (1744, 11351)]