20729830

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{947}}^1$

素因数の和:1164

約数の個数: 32

約数和(自身を含む): 40953600

約数和(自身を除く): 20223770

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 199, 398, 947, 995, 1894, 1990, 2189, 4378, 4735, 9470, 10417, 10945, 20834, 21890, 52085, 104170, 188453, 376906, 942265, 1884530, 2072983, 4145966, 10364915, 20729830]

約数ペア:

[(1, 20729830), (2, 10364915), (5, 4145966), (10, 2072983), (11, 1884530), (22, 942265), (55, 376906), (110, 188453), (199, 104170), (398, 52085), (947, 21890), (995, 20834), (1894, 10945), (1990, 10417), (2189, 9470), (4378, 4735)]