65000840

素因数分解:

$2^3\times 5^1\times {\mathrm{1625021}}^1$

素因数の和:1625032

約数の個数: 16

約数和(自身を含む): 146251980

約数和(自身を除く): 81251140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1625021, 3250042, 6500084, 8125105, 13000168, 16250210, 32500420, 65000840]

約数ペア:

[(1, 65000840), (2, 32500420), (4, 16250210), (5, 13000168), (8, 8125105), (10, 6500084), (20, 3250042), (40, 1625021)]