1290991805

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{389}}^1\times {\mathrm{16189}}^1$

素因数の和:16624

約数の個数: 16

約数和(自身を含む): 1591153200

約数和(自身を除く): 300161395

約数列:

[1, 5, 41, 205, 389, 1945, 15949, 16189, 79745, 80945, 663749, 3318745, 6297521, 31487605, 258198361, 1290991805]

約数ペア:

[(1, 1290991805), (5, 258198361), (41, 31487605), (205, 6297521), (389, 3318745), (1945, 663749), (15949, 80945), (16189, 79745)]