78406400

素因数分解:

$2^8\times 5^2\times {\mathrm{12251}}^1$

素因数の和:12277

約数の個数: 54

約数和(自身を含む): 194083932

約数和(自身を除く): 115677532

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 640, 800, 1280, 1600, 3200, 6400, 12251, 24502, 49004, 61255, 98008, 122510, 196016, 245020, 306275, 392032, 490040, 612550, 784064, 980080, 1225100, 1568128, 1960160, 2450200, 3136256, 3920320, 4900400, 7840640, 9800800, 15681280, 19601600, 39203200, 78406400]

約数ペア:

[(1, 78406400), (2, 39203200), (4, 19601600), (5, 15681280), (8, 9800800), (10, 7840640), (16, 4900400), (20, 3920320), (25, 3136256), (32, 2450200), (40, 1960160), (50, 1568128), (64, 1225100), (80, 980080), (100, 784064), (128, 612550), (160, 490040), (200, 392032), (256, 306275), (320, 245020), (400, 196016), (640, 122510), (800, 98008), (1280, 61255), (1600, 49004), (3200, 24502), (6400, 12251)]