18321280

素因数分解:

$2^7\times 5^1\times {\mathrm{28627}}^1$

素因数の和:28646

約数の個数: 32

約数和(自身を含む): 43800840

約数和(自身を除く): 25479560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 28627, 57254, 114508, 143135, 229016, 286270, 458032, 572540, 916064, 1145080, 1832128, 2290160, 3664256, 4580320, 9160640, 18321280]

約数ペア:

[(1, 18321280), (2, 9160640), (4, 4580320), (5, 3664256), (8, 2290160), (10, 1832128), (16, 1145080), (20, 916064), (32, 572540), (40, 458032), (64, 286270), (80, 229016), (128, 143135), (160, 114508), (320, 57254), (640, 28627)]