18936785

素因数分解:

$5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{2089}}^1$

素因数の和:2145

約数の個数: 24

約数和(自身を含む): 27161640

約数和(自身を除く): 8224855

約数列:

[1, 5, 7, 35, 37, 49, 185, 245, 259, 1295, 1813, 2089, 9065, 10445, 14623, 73115, 77293, 102361, 386465, 511805, 541051, 2705255, 3787357, 18936785]

約数ペア:

[(1, 18936785), (5, 3787357), (7, 2705255), (35, 541051), (37, 511805), (49, 386465), (185, 102361), (245, 77293), (259, 73115), (1295, 14623), (1813, 10445), (2089, 9065)]