128901488

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{217739}}^1$

素因数の和:217784

約数の個数: 20

約数和(自身を含む): 256497720

約数和(自身を除く): 127596232

約数列:

[1, 2, 4, 8, 16, 37, 74, 148, 296, 592, 217739, 435478, 870956, 1741912, 3483824, 8056343, 16112686, 32225372, 64450744, 128901488]

約数ペア:

[(1, 128901488), (2, 64450744), (4, 32225372), (8, 16112686), (16, 8056343), (37, 3483824), (74, 1741912), (148, 870956), (296, 435478), (592, 217739)]