64428500

素因数分解:

$2^2\times 5^3\times {\mathrm{128857}}^1$

素因数の和:128876

約数の個数: 24

約数和(自身を含む): 140712936

約数和(自身を除く): 76284436

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 128857, 257714, 515428, 644285, 1288570, 2577140, 3221425, 6442850, 12885700, 16107125, 32214250, 64428500]

約数ペア:

[(1, 64428500), (2, 32214250), (4, 16107125), (5, 12885700), (10, 6442850), (20, 3221425), (25, 2577140), (50, 1288570), (100, 644285), (125, 515428), (250, 257714), (500, 128857)]