20199691000

素因数分解:

$2^3\times 5^3\times {\mathrm{137}}^1\times {\mathrm{283}}^1\times {\mathrm{521}}^1$

素因数の和:962

約数の個数: 128

約数和(自身を含む): 47872244160

約数和(自身を除く): 27672553160

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 137, 200, 250, 274, 283, 500, 521, 548, 566, 685, 1000, 1042, 1096, 1132, 1370, 1415, 2084, 2264, 2605, 2740, 2830, 3425, 4168, 5210, 5480, 5660, 6850, 7075, 10420, 11320, 13025, 13700, 14150, 17125, 20840, 26050, 27400, 28300, 34250, 35375, 38771, 52100, 56600, 65125, 68500, 70750, 71377, 77542, 104200, 130250, 137000, 141500, 142754, 147443, 155084, 193855, 260500, 283000, 285508, 294886, 310168, 356885, 387710, 521000, 571016, 589772, 713770, 737215, 775420, 969275, 1179544, 1427540, 1474430, 1550840, 1784425, 1938550, 2855080, 2948860, 3568850, 3686075, 3877100, 4846375, 5897720, 7137700, 7372150, 7754200, 8922125, 9692750, 14275400, 14744300, 17844250, 18430375, 19385500, 20199691, 29488600, 35688500, 36860750, 38771000, 40399382, 71377000, 73721500, 80798764, 100998455, 147443000, 161597528, 201996910, 403993820, 504992275, 807987640, 1009984550, 2019969100, 2524961375, 4039938200, 5049922750, 10099845500, 20199691000]

約数ペア:

[(1, 20199691000), (2, 10099845500), (4, 5049922750), (5, 4039938200), (8, 2524961375), (10, 2019969100), (20, 1009984550), (25, 807987640), (40, 504992275), (50, 403993820), (100, 201996910), (125, 161597528), (137, 147443000), (200, 100998455), (250, 80798764), (274, 73721500), (283, 71377000), (500, 40399382), (521, 38771000), (548, 36860750), (566, 35688500), (685, 29488600), (1000, 20199691), (1042, 19385500), (1096, 18430375), (1132, 17844250), (1370, 14744300), (1415, 14275400), (2084, 9692750), (2264, 8922125), (2605, 7754200), (2740, 7372150), (2830, 7137700), (3425, 5897720), (4168, 4846375), (5210, 3877100), (5480, 3686075), (5660, 3568850), (6850, 2948860), (7075, 2855080), (10420, 1938550), (11320, 1784425), (13025, 1550840), (13700, 1474430), (14150, 1427540), (17125, 1179544), (20840, 969275), (26050, 775420), (27400, 737215), (28300, 713770), (34250, 589772), (35375, 571016), (38771, 521000), (52100, 387710), (56600, 356885), (65125, 310168), (68500, 294886), (70750, 285508), (71377, 283000), (77542, 260500), (104200, 193855), (130250, 155084), (137000, 147443), (141500, 142754)]