20989620850

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1031431}}^1$

素因数の和:1031491

約数の個数: 48

約数和(自身を含む): 43740968256

約数和(自身を除く): 22751347406

約数列:

[1, 2, 5, 10, 11, 22, 25, 37, 50, 55, 74, 110, 185, 275, 370, 407, 550, 814, 925, 1850, 2035, 4070, 10175, 20350, 1031431, 2062862, 5157155, 10314310, 11345741, 22691482, 25785775, 38162947, 51571550, 56728705, 76325894, 113457410, 190814735, 283643525, 381629470, 419792417, 567287050, 839584834, 954073675, 1908147350, 2098962085, 4197924170, 10494810425, 20989620850]

約数ペア:

[(1, 20989620850), (2, 10494810425), (5, 4197924170), (10, 2098962085), (11, 1908147350), (22, 954073675), (25, 839584834), (37, 567287050), (50, 419792417), (55, 381629470), (74, 283643525), (110, 190814735), (185, 113457410), (275, 76325894), (370, 56728705), (407, 51571550), (550, 38162947), (814, 25785775), (925, 22691482), (1850, 11345741), (2035, 10314310), (4070, 5157155), (10175, 2062862), (20350, 1031431)]