28510820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{2069}}^1$

素因数の和:2144

約数の個数: 48

約数和(自身を含む): 65726640

約数和(自身を除く): 37215820

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 53, 65, 106, 130, 212, 260, 265, 530, 689, 1060, 1378, 2069, 2756, 3445, 4138, 6890, 8276, 10345, 13780, 20690, 26897, 41380, 53794, 107588, 109657, 134485, 219314, 268970, 438628, 537940, 548285, 1096570, 1425541, 2193140, 2851082, 5702164, 7127705, 14255410, 28510820]

約数ペア:

[(1, 28510820), (2, 14255410), (4, 7127705), (5, 5702164), (10, 2851082), (13, 2193140), (20, 1425541), (26, 1096570), (52, 548285), (53, 537940), (65, 438628), (106, 268970), (130, 219314), (212, 134485), (260, 109657), (265, 107588), (530, 53794), (689, 41380), (1060, 26897), (1378, 20690), (2069, 13780), (2756, 10345), (3445, 8276), (4138, 6890)]