217628720

素因数分解:

$2^4\times 5^1\times {\mathrm{2720359}}^1$

素因数の和:2720372

約数の個数: 20

約数和(自身を含む): 505986960

約数和(自身を除く): 288358240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2720359, 5440718, 10881436, 13601795, 21762872, 27203590, 43525744, 54407180, 108814360, 217628720]

約数ペア:

[(1, 217628720), (2, 108814360), (4, 54407180), (5, 43525744), (8, 27203590), (10, 21762872), (16, 13601795), (20, 10881436), (40, 5440718), (80, 2720359)]