20867800

素因数分解:

$2^3\times 5^2\times {\mathrm{103}}^1\times {\mathrm{1013}}^1$

素因数の和:1132

約数の個数: 48

約数和(自身を含む): 49037040

約数和(自身を除く): 28169240

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 103, 200, 206, 412, 515, 824, 1013, 1030, 2026, 2060, 2575, 4052, 4120, 5065, 5150, 8104, 10130, 10300, 20260, 20600, 25325, 40520, 50650, 101300, 104339, 202600, 208678, 417356, 521695, 834712, 1043390, 2086780, 2608475, 4173560, 5216950, 10433900, 20867800]

約数ペア:

[(1, 20867800), (2, 10433900), (4, 5216950), (5, 4173560), (8, 2608475), (10, 2086780), (20, 1043390), (25, 834712), (40, 521695), (50, 417356), (100, 208678), (103, 202600), (200, 104339), (206, 101300), (412, 50650), (515, 40520), (824, 25325), (1013, 20600), (1030, 20260), (2026, 10300), (2060, 10130), (2575, 8104), (4052, 5150), (4120, 5065)]