20809790800

素因数分解:

$2^4\times 5^2\times {\mathrm{911}}^1\times {\mathrm{57107}}^1$

素因数の和:58036

約数の個数: 60

約数和(自身を含む): 50051278656

約数和(自身を除く): 29241487856

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 911, 1822, 3644, 4555, 7288, 9110, 14576, 18220, 22775, 36440, 45550, 57107, 72880, 91100, 114214, 182200, 228428, 285535, 364400, 456856, 571070, 913712, 1142140, 1427675, 2284280, 2855350, 4568560, 5710700, 11421400, 22842800, 52024477, 104048954, 208097908, 260122385, 416195816, 520244770, 832391632, 1040489540, 1300611925, 2080979080, 2601223850, 4161958160, 5202447700, 10404895400, 20809790800]

約数ペア:

[(1, 20809790800), (2, 10404895400), (4, 5202447700), (5, 4161958160), (8, 2601223850), (10, 2080979080), (16, 1300611925), (20, 1040489540), (25, 832391632), (40, 520244770), (50, 416195816), (80, 260122385), (100, 208097908), (200, 104048954), (400, 52024477), (911, 22842800), (1822, 11421400), (3644, 5710700), (4555, 4568560), (7288, 2855350), (9110, 2284280), (14576, 1427675), (18220, 1142140), (22775, 913712), (36440, 571070), (45550, 456856), (57107, 364400), (72880, 285535), (91100, 228428), (114214, 182200)]