28260856

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{20903}}^1$

素因数の和:20935

約数の個数: 24

約数和(自身を含む): 57381480

約数和(自身を除く): 29120624

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 169, 338, 676, 1352, 20903, 41806, 83612, 167224, 271739, 543478, 1086956, 2173912, 3532607, 7065214, 14130428, 28260856]

約数ペア:

[(1, 28260856), (2, 14130428), (4, 7065214), (8, 3532607), (13, 2173912), (26, 1086956), (52, 543478), (104, 271739), (169, 167224), (338, 83612), (676, 41806), (1352, 20903)]