199928140

素因数分解:

$2^2\times 5^1\times {\mathrm{349}}^1\times {\mathrm{28643}}^1$

素因数の和:29001

約数の個数: 24

約数和(自身を含む): 421066800

約数和(自身を除く): 221138660

約数列:

[1, 2, 4, 5, 10, 20, 349, 698, 1396, 1745, 3490, 6980, 28643, 57286, 114572, 143215, 286430, 572860, 9996407, 19992814, 39985628, 49982035, 99964070, 199928140]

約数ペア:

[(1, 199928140), (2, 99964070), (4, 49982035), (5, 39985628), (10, 19992814), (20, 9996407), (349, 572860), (698, 286430), (1396, 143215), (1745, 114572), (3490, 57286), (6980, 28643)]