138937280

素因数分解:

$2^6\times 5^1\times {\mathrm{434179}}^1$

素因数の和:434196

約数の個数: 28

約数和(自身を含む): 330845160

約数和(自身を除く): 191907880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 434179, 868358, 1736716, 2170895, 3473432, 4341790, 6946864, 8683580, 13893728, 17367160, 27787456, 34734320, 69468640, 138937280]

約数ペア:

[(1, 138937280), (2, 69468640), (4, 34734320), (5, 27787456), (8, 17367160), (10, 13893728), (16, 8683580), (20, 6946864), (32, 4341790), (40, 3473432), (64, 2170895), (80, 1736716), (160, 868358), (320, 434179)]