177204820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{681557}}^1$

素因数の和:681579

約数の個数: 24

約数和(自身を含む): 400756104

約数和(自身を除く): 223551284

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 681557, 1363114, 2726228, 3407785, 6815570, 8860241, 13631140, 17720482, 35440964, 44301205, 88602410, 177204820]

約数ペア:

[(1, 177204820), (2, 88602410), (4, 44301205), (5, 35440964), (10, 17720482), (13, 13631140), (20, 8860241), (26, 6815570), (52, 3407785), (65, 2726228), (130, 1363114), (260, 681557)]