20987496

素因数分解:

$2^3\times 3^2\times {\mathrm{31}}^1\times {\mathrm{9403}}^1$

素因数の和:9446

約数の個数: 48

約数和(自身を含む): 58680960

約数和(自身を除く): 37693464

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 31, 36, 62, 72, 93, 124, 186, 248, 279, 372, 558, 744, 1116, 2232, 9403, 18806, 28209, 37612, 56418, 75224, 84627, 112836, 169254, 225672, 291493, 338508, 582986, 677016, 874479, 1165972, 1748958, 2331944, 2623437, 3497916, 5246874, 6995832, 10493748, 20987496]

約数ペア:

[(1, 20987496), (2, 10493748), (3, 6995832), (4, 5246874), (6, 3497916), (8, 2623437), (9, 2331944), (12, 1748958), (18, 1165972), (24, 874479), (31, 677016), (36, 582986), (62, 338508), (72, 291493), (93, 225672), (124, 169254), (186, 112836), (248, 84627), (279, 75224), (372, 56418), (558, 37612), (744, 28209), (1116, 18806), (2232, 9403)]