28008265

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1$

素因数の和:241

約数の個数: 32

約数和(自身を含む): 37255680

約数和(自身を除く): 9247415

約数列:

[1, 5, 17, 43, 79, 85, 97, 215, 395, 485, 731, 1343, 1649, 3397, 3655, 4171, 6715, 7663, 8245, 16985, 20855, 38315, 57749, 70907, 130271, 288745, 329509, 354535, 651355, 1647545, 5601653, 28008265]

約数ペア:

[(1, 28008265), (5, 5601653), (17, 1647545), (43, 651355), (79, 354535), (85, 329509), (97, 288745), (215, 130271), (395, 70907), (485, 57749), (731, 38315), (1343, 20855), (1649, 16985), (3397, 8245), (3655, 7663), (4171, 6715)]