20978926

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{347}}^1$

素因数の和:448

約数の個数: 32

約数和(自身を含む): 34911360

約数和(自身を除く): 13932434

約数列:

[1, 2, 19, 37, 38, 43, 74, 86, 347, 694, 703, 817, 1406, 1591, 1634, 3182, 6593, 12839, 13186, 14921, 25678, 29842, 30229, 60458, 243941, 283499, 487882, 552077, 566998, 1104154, 10489463, 20978926]

約数ペア:

[(1, 20978926), (2, 10489463), (19, 1104154), (37, 566998), (38, 552077), (43, 487882), (74, 283499), (86, 243941), (347, 60458), (694, 30229), (703, 29842), (817, 25678), (1406, 14921), (1591, 13186), (1634, 12839), (3182, 6593)]