20900150

素因数分解:

$2^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{9721}}^1$

素因数の和:9776

約数の個数: 24

約数和(自身を含む): 39782424

約数和(自身を除く): 18882274

約数列:

[1, 2, 5, 10, 25, 43, 50, 86, 215, 430, 1075, 2150, 9721, 19442, 48605, 97210, 243025, 418003, 486050, 836006, 2090015, 4180030, 10450075, 20900150]

約数ペア:

[(1, 20900150), (2, 10450075), (5, 4180030), (10, 2090015), (25, 836006), (43, 486050), (50, 418003), (86, 243025), (215, 97210), (430, 48605), (1075, 19442), (2150, 9721)]