64681000

素因数分解:

$2^3\times 5^3\times {\mathrm{71}}^1\times {\mathrm{911}}^1$

素因数の和:1003

約数の個数: 64

約数和(自身を含む): 153653760

約数和(自身を除く): 88972760

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 71, 100, 125, 142, 200, 250, 284, 355, 500, 568, 710, 911, 1000, 1420, 1775, 1822, 2840, 3550, 3644, 4555, 7100, 7288, 8875, 9110, 14200, 17750, 18220, 22775, 35500, 36440, 45550, 64681, 71000, 91100, 113875, 129362, 182200, 227750, 258724, 323405, 455500, 517448, 646810, 911000, 1293620, 1617025, 2587240, 3234050, 6468100, 8085125, 12936200, 16170250, 32340500, 64681000]

約数ペア:

[(1, 64681000), (2, 32340500), (4, 16170250), (5, 12936200), (8, 8085125), (10, 6468100), (20, 3234050), (25, 2587240), (40, 1617025), (50, 1293620), (71, 911000), (100, 646810), (125, 517448), (142, 455500), (200, 323405), (250, 258724), (284, 227750), (355, 182200), (500, 129362), (568, 113875), (710, 91100), (911, 71000), (1000, 64681), (1420, 45550), (1775, 36440), (1822, 35500), (2840, 22775), (3550, 18220), (3644, 17750), (4555, 14200), (7100, 9110), (7288, 8875)]