1278826480

素因数分解:

$2^4\times 5^1\times {\mathrm{15985331}}^1$

素因数の和:15985344

約数の個数: 20

約数和(自身を含む): 2973271752

約数和(自身を除く): 1694445272

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 15985331, 31970662, 63941324, 79926655, 127882648, 159853310, 255765296, 319706620, 639413240, 1278826480]

約数ペア:

[(1, 1278826480), (2, 639413240), (4, 319706620), (5, 255765296), (8, 159853310), (10, 127882648), (16, 79926655), (20, 63941324), (40, 31970662), (80, 15985331)]