19221640

素因数分解:

$2^3\times 5^1\times {\mathrm{480541}}^1$

素因数の和:480552

約数の個数: 16

約数和(自身を含む): 43248780

約数和(自身を除く): 24027140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 480541, 961082, 1922164, 2402705, 3844328, 4805410, 9610820, 19221640]

約数ペア:

[(1, 19221640), (2, 9610820), (4, 4805410), (5, 3844328), (8, 2402705), (10, 1922164), (20, 961082), (40, 480541)]