64042940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{246319}}^1$

素因数の和:246341

約数の個数: 24

約数和(自身を含む): 144836160

約数和(自身を除く): 80793220

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 246319, 492638, 985276, 1231595, 2463190, 3202147, 4926380, 6404294, 12808588, 16010735, 32021470, 64042940]

約数ペア:

[(1, 64042940), (2, 32021470), (4, 16010735), (5, 12808588), (10, 6404294), (13, 4926380), (20, 3202147), (26, 2463190), (52, 1231595), (65, 985276), (130, 492638), (260, 246319)]