20390886

素因数分解:

$2^1\times 3^3\times {\mathrm{29}}^2\times {\mathrm{449}}^1$

素因数の和:518

約数の個数: 48

約数和(自身を含む): 47034000

約数和(自身を除く): 26643114

約数列:

[1, 2, 3, 6, 9, 18, 27, 29, 54, 58, 87, 174, 261, 449, 522, 783, 841, 898, 1347, 1566, 1682, 2523, 2694, 4041, 5046, 7569, 8082, 12123, 13021, 15138, 22707, 24246, 26042, 39063, 45414, 78126, 117189, 234378, 351567, 377609, 703134, 755218, 1132827, 2265654, 3398481, 6796962, 10195443, 20390886]

約数ペア:

[(1, 20390886), (2, 10195443), (3, 6796962), (6, 3398481), (9, 2265654), (18, 1132827), (27, 755218), (29, 703134), (54, 377609), (58, 351567), (87, 234378), (174, 117189), (261, 78126), (449, 45414), (522, 39063), (783, 26042), (841, 24246), (898, 22707), (1347, 15138), (1566, 13021), (1682, 12123), (2523, 8082), (2694, 7569), (4041, 5046)]