19997842

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{11197}}^1$

素因数の和:11265

約数の個数: 16

約数和(自身を含む): 32250240

約数和(自身を除く): 12252398

約数列:

[1, 2, 19, 38, 47, 94, 893, 1786, 11197, 22394, 212743, 425486, 526259, 1052518, 9998921, 19997842]

約数ペア:

[(1, 19997842), (2, 9998921), (19, 1052518), (38, 526259), (47, 425486), (94, 212743), (893, 22394), (1786, 11197)]