77760640

素因数分解:

$2^7\times 5^1\times {\mathrm{121501}}^1$

素因数の和:121520

約数の個数: 32

約数和(自身を含む): 185898060

約数和(自身を除く): 108137420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 121501, 243002, 486004, 607505, 972008, 1215010, 1944016, 2430020, 3888032, 4860040, 7776064, 9720080, 15552128, 19440160, 38880320, 77760640]

約数ペア:

[(1, 77760640), (2, 38880320), (4, 19440160), (5, 15552128), (8, 9720080), (10, 7776064), (16, 4860040), (20, 3888032), (32, 2430020), (40, 1944016), (64, 1215010), (80, 972008), (128, 607505), (160, 486004), (320, 243002), (640, 121501)]