1279656820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4921757}}^1$

素因数の和:4921779

約数の個数: 24

約数和(自身を含む): 2893993704

約数和(自身を除く): 1614336884

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 4921757, 9843514, 19687028, 24608785, 49217570, 63982841, 98435140, 127965682, 255931364, 319914205, 639828410, 1279656820]

約数ペア:

[(1, 1279656820), (2, 639828410), (4, 319914205), (5, 255931364), (10, 127965682), (13, 98435140), (20, 63982841), (26, 49217570), (52, 24608785), (65, 19687028), (130, 9843514), (260, 4921757)]