64940440

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{15173}}^1$

素因数の和:15291

約数の個数: 32

約数和(自身を含む): 147491280

約数和(自身を除く): 82550840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 15173, 30346, 60692, 75865, 121384, 151730, 303460, 606920, 1623511, 3247022, 6494044, 8117555, 12988088, 16235110, 32470220, 64940440]

約数ペア:

[(1, 64940440), (2, 32470220), (4, 16235110), (5, 12988088), (8, 8117555), (10, 6494044), (20, 3247022), (40, 1623511), (107, 606920), (214, 303460), (428, 151730), (535, 121384), (856, 75865), (1070, 60692), (2140, 30346), (4280, 15173)]