215686940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1540621}}^1$

素因数の和:1540637

約数の個数: 24

約数和(自身を含む): 517648992

約数和(自身を除く): 301962052

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1540621, 3081242, 6162484, 7703105, 10784347, 15406210, 21568694, 30812420, 43137388, 53921735, 107843470, 215686940]

約数ペア:

[(1, 215686940), (2, 107843470), (4, 53921735), (5, 43137388), (7, 30812420), (10, 21568694), (14, 15406210), (20, 10784347), (28, 7703105), (35, 6162484), (70, 3081242), (140, 1540621)]