28857712

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{138739}}^1$

素因数の和:138760

約数の個数: 20

約数和(自身を含む): 60213160

約数和(自身を除く): 31355448

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 138739, 277478, 554956, 1109912, 1803607, 2219824, 3607214, 7214428, 14428856, 28857712]

約数ペア:

[(1, 28857712), (2, 14428856), (4, 7214428), (8, 3607214), (13, 2219824), (16, 1803607), (26, 1109912), (52, 554956), (104, 277478), (208, 138739)]