55890940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{399221}}^1$

素因数の和:399237

約数の個数: 24

約数和(自身を含む): 134138592

約数和(自身を除く): 78247652

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 399221, 798442, 1596884, 1996105, 2794547, 3992210, 5589094, 7984420, 11178188, 13972735, 27945470, 55890940]

約数ペア:

[(1, 55890940), (2, 27945470), (4, 13972735), (5, 11178188), (7, 7984420), (10, 5589094), (14, 3992210), (20, 2794547), (28, 1996105), (35, 1596884), (70, 798442), (140, 399221)]