620565140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2386789}}^1$

素因数の和:2386811

約数の個数: 24

約数和(自身を含む): 1403432520

約数和(自身を除く): 782867380

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 2386789, 4773578, 9547156, 11933945, 23867890, 31028257, 47735780, 62056514, 124113028, 155141285, 310282570, 620565140]

約数ペア:

[(1, 620565140), (2, 310282570), (4, 155141285), (5, 124113028), (10, 62056514), (13, 47735780), (20, 31028257), (26, 23867890), (52, 11933945), (65, 9547156), (130, 4773578), (260, 2386789)]