258021296

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{1240487}}^1$

素因数の和:1240508

約数の個数: 20

約数和(自身を含む): 538371792

約数和(自身を除く): 280350496

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 1240487, 2480974, 4961948, 9923896, 16126331, 19847792, 32252662, 64505324, 129010648, 258021296]

約数ペア:

[(1, 258021296), (2, 129010648), (4, 64505324), (8, 32252662), (13, 19847792), (16, 16126331), (26, 9923896), (52, 4961948), (104, 2480974), (208, 1240487)]