64504040

素因数分解:

$2^3\times 5^1\times {\mathrm{1612601}}^1$

素因数の和:1612612

約数の個数: 16

約数和(自身を含む): 145134180

約数和(自身を除く): 80630140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1612601, 3225202, 6450404, 8063005, 12900808, 16126010, 32252020, 64504040]

約数ペア:

[(1, 64504040), (2, 32252020), (4, 16126010), (5, 12900808), (8, 8063005), (10, 6450404), (20, 3225202), (40, 1612601)]