209778910

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^3\times {\mathrm{15761}}^1$

素因数の和:15801

約数の個数: 32

約数和(自身を含む): 415360224

約数和(自身を除く): 205581314

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 121, 242, 605, 1210, 1331, 2662, 6655, 13310, 15761, 31522, 78805, 157610, 173371, 346742, 866855, 1733710, 1907081, 3814162, 9535405, 19070810, 20977891, 41955782, 104889455, 209778910]

約数ペア:

[(1, 209778910), (2, 104889455), (5, 41955782), (10, 20977891), (11, 19070810), (22, 9535405), (55, 3814162), (110, 1907081), (121, 1733710), (242, 866855), (605, 346742), (1210, 173371), (1331, 157610), (2662, 78805), (6655, 31522), (13310, 15761)]