28487420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109567}}^1$

素因数の和:109589

約数の個数: 24

約数和(自身を含む): 64425984

約数和(自身を除く): 35938564

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 109567, 219134, 438268, 547835, 1095670, 1424371, 2191340, 2848742, 5697484, 7121855, 14243710, 28487420]

約数ペア:

[(1, 28487420), (2, 14243710), (4, 7121855), (5, 5697484), (10, 2848742), (13, 2191340), (20, 1424371), (26, 1095670), (52, 547835), (65, 438268), (130, 219134), (260, 109567)]