20898880

素因数分解:

$2^6\times 5^1\times {\mathrm{65309}}^1$

素因数の和:65326

約数の個数: 28

約数和(自身を含む): 49766220

約数和(自身を除く): 28867340

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 65309, 130618, 261236, 326545, 522472, 653090, 1044944, 1306180, 2089888, 2612360, 4179776, 5224720, 10449440, 20898880]

約数ペア:

[(1, 20898880), (2, 10449440), (4, 5224720), (5, 4179776), (8, 2612360), (10, 2089888), (16, 1306180), (20, 1044944), (32, 653090), (40, 522472), (64, 326545), (80, 261236), (160, 130618), (320, 65309)]