20694280

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5813}}^1$

素因数の和:5913

約数の個数: 32

約数和(自身を含む): 47093400

約数和(自身を除く): 26399120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 5813, 11626, 23252, 29065, 46504, 58130, 116260, 232520, 517357, 1034714, 2069428, 2586785, 4138856, 5173570, 10347140, 20694280]

約数ペア:

[(1, 20694280), (2, 10347140), (4, 5173570), (5, 4138856), (8, 2586785), (10, 2069428), (20, 1034714), (40, 517357), (89, 232520), (178, 116260), (356, 58130), (445, 46504), (712, 29065), (890, 23252), (1780, 11626), (3560, 5813)]