20321260

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{1009}}^1$

素因数の和:1090

約数の個数: 48

約数和(自身を含む): 45813600

約数和(自身を除く): 25492340

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 53, 76, 95, 106, 190, 212, 265, 380, 530, 1007, 1009, 1060, 2014, 2018, 4028, 4036, 5035, 5045, 10070, 10090, 19171, 20140, 20180, 38342, 53477, 76684, 95855, 106954, 191710, 213908, 267385, 383420, 534770, 1016063, 1069540, 2032126, 4064252, 5080315, 10160630, 20321260]

約数ペア:

[(1, 20321260), (2, 10160630), (4, 5080315), (5, 4064252), (10, 2032126), (19, 1069540), (20, 1016063), (38, 534770), (53, 383420), (76, 267385), (95, 213908), (106, 191710), (190, 106954), (212, 95855), (265, 76684), (380, 53477), (530, 38342), (1007, 20180), (1009, 20140), (1060, 19171), (2014, 10090), (2018, 10070), (4028, 5045), (4036, 5035)]