18028240

素因数分解:

$2^4\times 5^1\times {\mathrm{225353}}^1$

素因数の和:225366

約数の個数: 20

約数和(自身を含む): 41915844

約数和(自身を除く): 23887604

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 225353, 450706, 901412, 1126765, 1802824, 2253530, 3605648, 4507060, 9014120, 18028240]

約数ペア:

[(1, 18028240), (2, 9014120), (4, 4507060), (5, 3605648), (8, 2253530), (10, 1802824), (16, 1126765), (20, 901412), (40, 450706), (80, 225353)]