20553820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{7727}}^1$

素因数の和:7762

約数の個数: 48

約数和(自身を含む): 51932160

約数和(自身を除く): 31378340

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330, 2660, 7727, 15454, 30908, 38635, 54089, 77270, 108178, 146813, 154540, 216356, 270445, 293626, 540890, 587252, 734065, 1027691, 1081780, 1468130, 2055382, 2936260, 4110764, 5138455, 10276910, 20553820]

約数ペア:

[(1, 20553820), (2, 10276910), (4, 5138455), (5, 4110764), (7, 2936260), (10, 2055382), (14, 1468130), (19, 1081780), (20, 1027691), (28, 734065), (35, 587252), (38, 540890), (70, 293626), (76, 270445), (95, 216356), (133, 154540), (140, 146813), (190, 108178), (266, 77270), (380, 54089), (532, 38635), (665, 30908), (1330, 15454), (2660, 7727)]