18780436

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{4051}}^1$

素因数の和:4135

約数の個数: 24

約数和(自身を含む): 35171360

約数和(自身を除く): 16390924

約数列:

[1, 2, 4, 19, 38, 61, 76, 122, 244, 1159, 2318, 4051, 4636, 8102, 16204, 76969, 153938, 247111, 307876, 494222, 988444, 4695109, 9390218, 18780436]

約数ペア:

[(1, 18780436), (2, 9390218), (4, 4695109), (19, 988444), (38, 494222), (61, 307876), (76, 247111), (122, 153938), (244, 76969), (1159, 16204), (2318, 8102), (4051, 4636)]