64178140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{246839}}^1$

素因数の和:246861

約数の個数: 24

約数和(自身を含む): 145141920

約数和(自身を除く): 80963780

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 246839, 493678, 987356, 1234195, 2468390, 3208907, 4936780, 6417814, 12835628, 16044535, 32089070, 64178140]

約数ペア:

[(1, 64178140), (2, 32089070), (4, 16044535), (5, 12835628), (10, 6417814), (13, 4936780), (20, 3208907), (26, 2468390), (52, 1234195), (65, 987356), (130, 493678), (260, 246839)]