40960000640

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{401}}^1\times {\mathrm{12277}}^1$

素因数の和:12710

約数の個数: 128

約数和(自身を含む): 105723893520

約数和(自身を除く): 64763892880

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 260, 320, 401, 416, 520, 640, 802, 832, 1040, 1604, 1664, 2005, 2080, 3208, 4010, 4160, 5213, 6416, 8020, 8320, 10426, 12277, 12832, 16040, 20852, 24554, 25664, 26065, 32080, 41704, 49108, 51328, 52130, 61385, 64160, 83408, 98216, 104260, 122770, 128320, 159601, 166816, 196432, 208520, 245540, 256640, 319202, 333632, 392864, 417040, 491080, 638404, 667264, 785728, 798005, 834080, 982160, 1276808, 1571456, 1596010, 1668160, 1964320, 2553616, 3192020, 3336320, 3928640, 4923077, 5107232, 6384040, 7857280, 9846154, 10214464, 12768080, 19692308, 20428928, 24615385, 25536160, 39384616, 49230770, 51072320, 64000001, 78769232, 98461540, 102144640, 128000002, 157538464, 196923080, 256000004, 315076928, 320000005, 393846160, 512000008, 630153856, 640000010, 787692320, 1024000016, 1280000020, 1575384640, 2048000032, 2560000040, 3150769280, 4096000064, 5120000080, 8192000128, 10240000160, 20480000320, 40960000640]

約数ペア:

[(1, 40960000640), (2, 20480000320), (4, 10240000160), (5, 8192000128), (8, 5120000080), (10, 4096000064), (13, 3150769280), (16, 2560000040), (20, 2048000032), (26, 1575384640), (32, 1280000020), (40, 1024000016), (52, 787692320), (64, 640000010), (65, 630153856), (80, 512000008), (104, 393846160), (128, 320000005), (130, 315076928), (160, 256000004), (208, 196923080), (260, 157538464), (320, 128000002), (401, 102144640), (416, 98461540), (520, 78769232), (640, 64000001), (802, 51072320), (832, 49230770), (1040, 39384616), (1604, 25536160), (1664, 24615385), (2005, 20428928), (2080, 19692308), (3208, 12768080), (4010, 10214464), (4160, 9846154), (5213, 7857280), (6416, 6384040), (8020, 5107232), (8320, 4923077), (10426, 3928640), (12277, 3336320), (12832, 3192020), (16040, 2553616), (20852, 1964320), (24554, 1668160), (25664, 1596010), (26065, 1571456), (32080, 1276808), (41704, 982160), (49108, 834080), (51328, 798005), (52130, 785728), (61385, 667264), (64160, 638404), (83408, 491080), (98216, 417040), (104260, 392864), (122770, 333632), (128320, 319202), (159601, 256640), (166816, 245540), (196432, 208520)]