20018908

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1279}}^1$

素因数の和:1346

約数の個数: 48

約数和(自身を含む): 44154880

約数和(自身を除く): 24135972

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 43, 52, 86, 91, 172, 182, 301, 364, 559, 602, 1118, 1204, 1279, 2236, 2558, 3913, 5116, 7826, 8953, 15652, 16627, 17906, 33254, 35812, 54997, 66508, 109994, 116389, 219988, 232778, 384979, 465556, 714961, 769958, 1429922, 1539916, 2859844, 5004727, 10009454, 20018908]

約数ペア:

[(1, 20018908), (2, 10009454), (4, 5004727), (7, 2859844), (13, 1539916), (14, 1429922), (26, 769958), (28, 714961), (43, 465556), (52, 384979), (86, 232778), (91, 219988), (172, 116389), (182, 109994), (301, 66508), (364, 54997), (559, 35812), (602, 33254), (1118, 17906), (1204, 16627), (1279, 15652), (2236, 8953), (2558, 7826), (3913, 5116)]