280471880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{137}}^1$

素因数の和:319

約数の個数: 128

約数和(自身を含む): 712212480

約数和(自身を除く): 431740600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 127, 130, 137, 155, 248, 254, 260, 274, 310, 403, 508, 520, 548, 620, 635, 685, 806, 1016, 1096, 1240, 1270, 1370, 1612, 1651, 1781, 2015, 2540, 2740, 3224, 3302, 3562, 3937, 4030, 4247, 5080, 5480, 6604, 7124, 7874, 8060, 8255, 8494, 8905, 13208, 14248, 15748, 16120, 16510, 16988, 17399, 17810, 19685, 21235, 31496, 33020, 33976, 34798, 35620, 39370, 42470, 51181, 55211, 66040, 69596, 71240, 78740, 84940, 86995, 102362, 110422, 139192, 157480, 169880, 173990, 204724, 220844, 226187, 255905, 276055, 347980, 409448, 441688, 452374, 511810, 539369, 552110, 695960, 904748, 1023620, 1078738, 1104220, 1130935, 1809496, 2047240, 2157476, 2208440, 2261870, 2696845, 4314952, 4523740, 5393690, 7011797, 9047480, 10787380, 14023594, 21574760, 28047188, 35058985, 56094376, 70117970, 140235940, 280471880]

約数ペア:

[(1, 280471880), (2, 140235940), (4, 70117970), (5, 56094376), (8, 35058985), (10, 28047188), (13, 21574760), (20, 14023594), (26, 10787380), (31, 9047480), (40, 7011797), (52, 5393690), (62, 4523740), (65, 4314952), (104, 2696845), (124, 2261870), (127, 2208440), (130, 2157476), (137, 2047240), (155, 1809496), (248, 1130935), (254, 1104220), (260, 1078738), (274, 1023620), (310, 904748), (403, 695960), (508, 552110), (520, 539369), (548, 511810), (620, 452374), (635, 441688), (685, 409448), (806, 347980), (1016, 276055), (1096, 255905), (1240, 226187), (1270, 220844), (1370, 204724), (1612, 173990), (1651, 169880), (1781, 157480), (2015, 139192), (2540, 110422), (2740, 102362), (3224, 86995), (3302, 84940), (3562, 78740), (3937, 71240), (4030, 69596), (4247, 66040), (5080, 55211), (5480, 51181), (6604, 42470), (7124, 39370), (7874, 35620), (8060, 34798), (8255, 33976), (8494, 33020), (8905, 31496), (13208, 21235), (14248, 19685), (15748, 17810), (16120, 17399), (16510, 16988)]