19490440

素因数分解:

$2^3\times 5^1\times {\mathrm{487261}}^1$

素因数の和:487272

約数の個数: 16

約数和(自身を含む): 43853580

約数和(自身を除く): 24363140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 487261, 974522, 1949044, 2436305, 3898088, 4872610, 9745220, 19490440]

約数ペア:

[(1, 19490440), (2, 9745220), (4, 4872610), (5, 3898088), (8, 2436305), (10, 1949044), (20, 974522), (40, 487261)]