256021900

素因数分解:

$2^2\times 5^2\times {\mathrm{2560219}}^1$

素因数の和:2560233

約数の個数: 18

約数和(自身を含む): 555567740

約数和(自身を除く): 299545840

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 2560219, 5120438, 10240876, 12801095, 25602190, 51204380, 64005475, 128010950, 256021900]

約数ペア:

[(1, 256021900), (2, 128010950), (4, 64005475), (5, 51204380), (10, 25602190), (20, 12801095), (25, 10240876), (50, 5120438), (100, 2560219)]