20478220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{146273}}^1$

素因数の和:146289

約数の個数: 24

約数和(自身を含む): 49148064

約数和(自身を除く): 28669844

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 146273, 292546, 585092, 731365, 1023911, 1462730, 2047822, 2925460, 4095644, 5119555, 10239110, 20478220]

約数ペア:

[(1, 20478220), (2, 10239110), (4, 5119555), (5, 4095644), (7, 2925460), (10, 2047822), (14, 1462730), (20, 1023911), (28, 731365), (35, 585092), (70, 292546), (140, 146273)]