20807508

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^1\times {\mathrm{263}}^1\times {\mathrm{347}}^1$

素因数の和:636

約数の個数: 48

約数和(自身を含む): 51448320

約数和(自身を除く): 30640812

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 57, 76, 114, 228, 263, 347, 526, 694, 789, 1041, 1052, 1388, 1578, 2082, 3156, 4164, 4997, 6593, 9994, 13186, 14991, 19779, 19988, 26372, 29982, 39558, 59964, 79116, 91261, 182522, 273783, 365044, 547566, 1095132, 1733959, 3467918, 5201877, 6935836, 10403754, 20807508]

約数ペア:

[(1, 20807508), (2, 10403754), (3, 6935836), (4, 5201877), (6, 3467918), (12, 1733959), (19, 1095132), (38, 547566), (57, 365044), (76, 273783), (114, 182522), (228, 91261), (263, 79116), (347, 59964), (526, 39558), (694, 29982), (789, 26372), (1041, 19988), (1052, 19779), (1388, 14991), (1578, 13186), (2082, 9994), (3156, 6593), (4164, 4997)]