20505100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{2663}}^1$

素因数の和:2695

約数の個数: 72

約数和(自身を含む): 55496448

約数和(自身を除く): 34991348

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 25, 28, 35, 44, 50, 55, 70, 77, 100, 110, 140, 154, 175, 220, 275, 308, 350, 385, 550, 700, 770, 1100, 1540, 1925, 2663, 3850, 5326, 7700, 10652, 13315, 18641, 26630, 29293, 37282, 53260, 58586, 66575, 74564, 93205, 117172, 133150, 146465, 186410, 205051, 266300, 292930, 372820, 410102, 466025, 585860, 732325, 820204, 932050, 1025255, 1464650, 1864100, 2050510, 2929300, 4101020, 5126275, 10252550, 20505100]

約数ペア:

[(1, 20505100), (2, 10252550), (4, 5126275), (5, 4101020), (7, 2929300), (10, 2050510), (11, 1864100), (14, 1464650), (20, 1025255), (22, 932050), (25, 820204), (28, 732325), (35, 585860), (44, 466025), (50, 410102), (55, 372820), (70, 292930), (77, 266300), (100, 205051), (110, 186410), (140, 146465), (154, 133150), (175, 117172), (220, 93205), (275, 74564), (308, 66575), (350, 58586), (385, 53260), (550, 37282), (700, 29293), (770, 26630), (1100, 18641), (1540, 13315), (1925, 10652), (2663, 7700), (3850, 5326)]