64008440

素因数分解:

$2^3\times 5^1\times {\mathrm{1600211}}^1$

素因数の和:1600222

約数の個数: 16

約数和(自身を含む): 144019080

約数和(自身を除く): 80010640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1600211, 3200422, 6400844, 8001055, 12801688, 16002110, 32004220, 64008440]

約数ペア:

[(1, 64008440), (2, 32004220), (4, 16002110), (5, 12801688), (8, 8001055), (10, 6400844), (20, 3200422), (40, 1600211)]