20857660460

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{26839}}^1$

素因数の和:26936

約数の個数: 144

約数和(自身を含む): 55773305280

約数和(自身を除く): 34915644820

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 61, 65, 70, 91, 98, 122, 130, 140, 182, 196, 244, 245, 260, 305, 364, 427, 455, 490, 610, 637, 793, 854, 910, 980, 1220, 1274, 1586, 1708, 1820, 2135, 2548, 2989, 3172, 3185, 3965, 4270, 5551, 5978, 6370, 7930, 8540, 11102, 11956, 12740, 14945, 15860, 22204, 26839, 27755, 29890, 38857, 53678, 55510, 59780, 77714, 107356, 111020, 134195, 155428, 187873, 194285, 268390, 348907, 375746, 388570, 536780, 697814, 751492, 777140, 939365, 1315111, 1395628, 1637179, 1744535, 1878730, 2442349, 2630222, 3274358, 3489070, 3757460, 4884698, 5260444, 6548716, 6575555, 6978140, 8185895, 9769396, 11460253, 12211745, 13151110, 16371790, 17096443, 21283327, 22920506, 24423490, 26302220, 32743580, 34192886, 42566654, 45841012, 48846980, 57301265, 68385772, 80221771, 85133308, 85482215, 106416635, 114602530, 148983289, 160443542, 170964430, 212833270, 229205060, 297966578, 320887084, 341928860, 401108855, 425666540, 595933156, 744916445, 802217710, 1042883023, 1489832890, 1604435420, 2085766046, 2979665780, 4171532092, 5214415115, 10428830230, 20857660460]

約数ペア:

[(1, 20857660460), (2, 10428830230), (4, 5214415115), (5, 4171532092), (7, 2979665780), (10, 2085766046), (13, 1604435420), (14, 1489832890), (20, 1042883023), (26, 802217710), (28, 744916445), (35, 595933156), (49, 425666540), (52, 401108855), (61, 341928860), (65, 320887084), (70, 297966578), (91, 229205060), (98, 212833270), (122, 170964430), (130, 160443542), (140, 148983289), (182, 114602530), (196, 106416635), (244, 85482215), (245, 85133308), (260, 80221771), (305, 68385772), (364, 57301265), (427, 48846980), (455, 45841012), (490, 42566654), (610, 34192886), (637, 32743580), (793, 26302220), (854, 24423490), (910, 22920506), (980, 21283327), (1220, 17096443), (1274, 16371790), (1586, 13151110), (1708, 12211745), (1820, 11460253), (2135, 9769396), (2548, 8185895), (2989, 6978140), (3172, 6575555), (3185, 6548716), (3965, 5260444), (4270, 4884698), (5551, 3757460), (5978, 3489070), (6370, 3274358), (7930, 2630222), (8540, 2442349), (11102, 1878730), (11956, 1744535), (12740, 1637179), (14945, 1395628), (15860, 1315111), (22204, 939365), (26839, 777140), (27755, 751492), (29890, 697814), (38857, 536780), (53678, 388570), (55510, 375746), (59780, 348907), (77714, 268390), (107356, 194285), (111020, 187873), (134195, 155428)]