54640820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{210157}}^1$

素因数の和:210179

約数の個数: 24

約数和(自身を含む): 123572904

約数和(自身を除く): 68932084

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 210157, 420314, 840628, 1050785, 2101570, 2732041, 4203140, 5464082, 10928164, 13660205, 27320410, 54640820]

約数ペア:

[(1, 54640820), (2, 27320410), (4, 13660205), (5, 10928164), (10, 5464082), (13, 4203140), (20, 2732041), (26, 2101570), (52, 1050785), (65, 840628), (130, 420314), (260, 210157)]