20567800

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{9349}}^1$

素因数の和:9376

約数の個数: 48

約数和(自身を含む): 52173000

約数和(自身を除く): 31605200

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 200, 220, 275, 440, 550, 1100, 2200, 9349, 18698, 37396, 46745, 74792, 93490, 102839, 186980, 205678, 233725, 373960, 411356, 467450, 514195, 822712, 934900, 1028390, 1869800, 2056780, 2570975, 4113560, 5141950, 10283900, 20567800]

約数ペア:

[(1, 20567800), (2, 10283900), (4, 5141950), (5, 4113560), (8, 2570975), (10, 2056780), (11, 1869800), (20, 1028390), (22, 934900), (25, 822712), (40, 514195), (44, 467450), (50, 411356), (55, 373960), (88, 233725), (100, 205678), (110, 186980), (200, 102839), (220, 93490), (275, 74792), (440, 46745), (550, 37396), (1100, 18698), (2200, 9349)]