19640464

素因数分解:

$2^4\times {\mathrm{541}}^1\times {\mathrm{2269}}^1$

素因数の和:2818

約数の個数: 20

約数和(自身を含む): 38140540

約数和(自身を除く): 18500076

約数列:

[1, 2, 4, 8, 16, 541, 1082, 2164, 2269, 4328, 4538, 8656, 9076, 18152, 36304, 1227529, 2455058, 4910116, 9820232, 19640464]

約数ペア:

[(1, 19640464), (2, 9820232), (4, 4910116), (8, 2455058), (16, 1227529), (541, 36304), (1082, 18152), (2164, 9076), (2269, 8656), (4328, 4538)]