28108990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1$

素因数の和:146

約数の個数: 128

約数和(自身を含む): 69672960

約数和(自身を除く): 41563970

約数列:

[1, 2, 5, 7, 10, 13, 14, 17, 23, 26, 34, 35, 46, 65, 70, 79, 85, 91, 115, 119, 130, 158, 161, 170, 182, 221, 230, 238, 299, 322, 391, 395, 442, 455, 553, 595, 598, 782, 790, 805, 910, 1027, 1105, 1106, 1190, 1343, 1495, 1547, 1610, 1817, 1955, 2054, 2093, 2210, 2686, 2737, 2765, 2990, 3094, 3634, 3910, 4186, 5083, 5135, 5474, 5530, 6715, 7189, 7735, 9085, 9401, 10166, 10270, 10465, 12719, 13430, 13685, 14378, 15470, 17459, 18170, 18802, 20930, 23621, 25415, 25438, 27370, 30889, 34918, 35581, 35945, 47005, 47242, 50830, 61778, 63595, 71162, 71890, 87295, 94010, 118105, 122213, 127190, 154445, 165347, 174590, 177905, 216223, 236210, 244426, 308890, 330694, 355810, 401557, 432446, 611065, 803114, 826735, 1081115, 1222130, 1653470, 2007785, 2162230, 2810899, 4015570, 5621798, 14054495, 28108990]

約数ペア:

[(1, 28108990), (2, 14054495), (5, 5621798), (7, 4015570), (10, 2810899), (13, 2162230), (14, 2007785), (17, 1653470), (23, 1222130), (26, 1081115), (34, 826735), (35, 803114), (46, 611065), (65, 432446), (70, 401557), (79, 355810), (85, 330694), (91, 308890), (115, 244426), (119, 236210), (130, 216223), (158, 177905), (161, 174590), (170, 165347), (182, 154445), (221, 127190), (230, 122213), (238, 118105), (299, 94010), (322, 87295), (391, 71890), (395, 71162), (442, 63595), (455, 61778), (553, 50830), (595, 47242), (598, 47005), (782, 35945), (790, 35581), (805, 34918), (910, 30889), (1027, 27370), (1105, 25438), (1106, 25415), (1190, 23621), (1343, 20930), (1495, 18802), (1547, 18170), (1610, 17459), (1817, 15470), (1955, 14378), (2054, 13685), (2093, 13430), (2210, 12719), (2686, 10465), (2737, 10270), (2765, 10166), (2990, 9401), (3094, 9085), (3634, 7735), (3910, 7189), (4186, 6715), (5083, 5530), (5135, 5474)]