20516650

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^2$

素因数の和:176

約数の個数: 72

約数和(自身を含む): 48237984

約数和(自身を除く): 27721334

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 25, 35, 50, 55, 70, 73, 77, 110, 146, 154, 175, 275, 350, 365, 385, 511, 550, 730, 770, 803, 1022, 1606, 1825, 1925, 2555, 3650, 3850, 4015, 5110, 5329, 5621, 8030, 10658, 11242, 12775, 20075, 25550, 26645, 28105, 37303, 40150, 53290, 56210, 58619, 74606, 117238, 133225, 140525, 186515, 266450, 281050, 293095, 373030, 410333, 586190, 820666, 932575, 1465475, 1865150, 2051665, 2930950, 4103330, 10258325, 20516650]

約数ペア:

[(1, 20516650), (2, 10258325), (5, 4103330), (7, 2930950), (10, 2051665), (11, 1865150), (14, 1465475), (22, 932575), (25, 820666), (35, 586190), (50, 410333), (55, 373030), (70, 293095), (73, 281050), (77, 266450), (110, 186515), (146, 140525), (154, 133225), (175, 117238), (275, 74606), (350, 58619), (365, 56210), (385, 53290), (511, 40150), (550, 37303), (730, 28105), (770, 26645), (803, 25550), (1022, 20075), (1606, 12775), (1825, 11242), (1925, 10658), (2555, 8030), (3650, 5621), (3850, 5329), (4015, 5110)]