20686720

素因数分解:

$2^7\times 5^1\times {\mathrm{32323}}^1$

素因数の和:32342

約数の個数: 32

約数和(自身を含む): 49455720

約数和(自身を除く): 28769000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 32323, 64646, 129292, 161615, 258584, 323230, 517168, 646460, 1034336, 1292920, 2068672, 2585840, 4137344, 5171680, 10343360, 20686720]

約数ペア:

[(1, 20686720), (2, 10343360), (4, 5171680), (5, 4137344), (8, 2585840), (10, 2068672), (16, 1292920), (20, 1034336), (32, 646460), (40, 517168), (64, 323230), (80, 258584), (128, 161615), (160, 129292), (320, 64646), (640, 32323)]