64731280

素因数分解:

$2^4\times 5^1\times {\mathrm{809141}}^1$

素因数の和:809154

約数の個数: 20

約数和(自身を含む): 150500412

約数和(自身を除く): 85769132

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 809141, 1618282, 3236564, 4045705, 6473128, 8091410, 12946256, 16182820, 32365640, 64731280]

約数ペア:

[(1, 64731280), (2, 32365640), (4, 16182820), (5, 12946256), (8, 8091410), (10, 6473128), (16, 4045705), (20, 3236564), (40, 1618282), (80, 809141)]