19981256

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{146921}}^1$

素因数の和:146944

約数の個数: 16

約数和(自身を含む): 39668940

約数和(自身を除く): 19687684

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 146921, 293842, 587684, 1175368, 2497657, 4995314, 9990628, 19981256]

約数ペア:

[(1, 19981256), (2, 9990628), (4, 4995314), (8, 2497657), (17, 1175368), (34, 587684), (68, 293842), (136, 146921)]