159857840

素因数分解:

$2^4\times 5^1\times {\mathrm{1998223}}^1$

素因数の和:1998236

約数の個数: 20

約数和(自身を含む): 371669664

約数和(自身を除く): 211811824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1998223, 3996446, 7992892, 9991115, 15985784, 19982230, 31971568, 39964460, 79928920, 159857840]

約数ペア:

[(1, 159857840), (2, 79928920), (4, 39964460), (5, 31971568), (8, 19982230), (10, 15985784), (16, 9991115), (20, 7992892), (40, 3996446), (80, 1998223)]