18784880

素因数分解:

$2^4\times 5^1\times {\mathrm{234811}}^1$

素因数の和:234824

約数の個数: 20

約数和(自身を含む): 43675032

約数和(自身を除く): 24890152

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 234811, 469622, 939244, 1174055, 1878488, 2348110, 3756976, 4696220, 9392440, 18784880]

約数ペア:

[(1, 18784880), (2, 9392440), (4, 4696220), (5, 3756976), (8, 2348110), (10, 1878488), (16, 1174055), (20, 939244), (40, 469622), (80, 234811)]