209230720

素因数分解:

$2^7\times 5^1\times {\mathrm{326923}}^1$

素因数の和:326942

約数の個数: 32

約数和(自身を含む): 500193720

約数和(自身を除く): 290963000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 326923, 653846, 1307692, 1634615, 2615384, 3269230, 5230768, 6538460, 10461536, 13076920, 20923072, 26153840, 41846144, 52307680, 104615360, 209230720]

約数ペア:

[(1, 209230720), (2, 104615360), (4, 52307680), (5, 41846144), (8, 26153840), (10, 20923072), (16, 13076920), (20, 10461536), (32, 6538460), (40, 5230768), (64, 3269230), (80, 2615384), (128, 1634615), (160, 1307692), (320, 653846), (640, 326923)]