18897520

素因数分解:

$2^4\times 5^1\times {\mathrm{236219}}^1$

素因数の和:236232

約数の個数: 20

約数和(自身を含む): 43936920

約数和(自身を除く): 25039400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 236219, 472438, 944876, 1181095, 1889752, 2362190, 3779504, 4724380, 9448760, 18897520]

約数ペア:

[(1, 18897520), (2, 9448760), (4, 4724380), (5, 3779504), (8, 2362190), (10, 1889752), (16, 1181095), (20, 944876), (40, 472438), (80, 236219)]