389370940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{2781221}}^1$

素因数の和:2781237

約数の個数: 24

約数和(自身を含む): 934490592

約数和(自身を除く): 545119652

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 2781221, 5562442, 11124884, 13906105, 19468547, 27812210, 38937094, 55624420, 77874188, 97342735, 194685470, 389370940]

約数ペア:

[(1, 389370940), (2, 194685470), (4, 97342735), (5, 77874188), (7, 55624420), (10, 38937094), (14, 27812210), (20, 19468547), (28, 13906105), (35, 11124884), (70, 5562442), (140, 2781221)]