64782440

素因数分解:

$2^3\times 5^1\times {\mathrm{1619561}}^1$

素因数の和:1619572

約数の個数: 16

約数和(自身を含む): 145760580

約数和(自身を除く): 80978140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1619561, 3239122, 6478244, 8097805, 12956488, 16195610, 32391220, 64782440]

約数ペア:

[(1, 64782440), (2, 32391220), (4, 16195610), (5, 12956488), (8, 8097805), (10, 6478244), (20, 3239122), (40, 1619561)]