64642280

素因数分解:

$2^3\times 5^1\times {\mathrm{1616057}}^1$

素因数の和:1616068

約数の個数: 16

約数和(自身を含む): 145445220

約数和(自身を除く): 80802940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1616057, 3232114, 6464228, 8080285, 12928456, 16160570, 32321140, 64642280]

約数ペア:

[(1, 64642280), (2, 32321140), (4, 16160570), (5, 12928456), (8, 8080285), (10, 6464228), (20, 3232114), (40, 1616057)]