9903280

素因数分解:

$2^4\times 5^1\times {\mathrm{123791}}^1$

素因数の和:123804

約数の個数: 20

約数和(自身を含む): 23025312

約数和(自身を除く): 13122032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 123791, 247582, 495164, 618955, 990328, 1237910, 1980656, 2475820, 4951640, 9903280]

約数ペア:

[(1, 9903280), (2, 4951640), (4, 2475820), (5, 1980656), (8, 1237910), (10, 990328), (16, 618955), (20, 495164), (40, 247582), (80, 123791)]