1640129900

素因数分解:

$2^2\times 5^2\times {\mathrm{16401299}}^1$

素因数の和:16401313

約数の個数: 18

約数和(自身を含む): 3559082100

約数和(自身を除く): 1918952200

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 16401299, 32802598, 65605196, 82006495, 164012990, 328025980, 410032475, 820064950, 1640129900]

約数ペア:

[(1, 1640129900), (2, 820064950), (4, 410032475), (5, 328025980), (10, 164012990), (20, 82006495), (25, 65605196), (50, 32802598), (100, 16401299)]