1281862540

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{523}}^1$

素因数の和:648

約数の個数: 144

約数和(自身を含む): 3266603424

約数和(自身を除く): 1984740884

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 49, 61, 70, 82, 98, 122, 140, 164, 196, 205, 244, 245, 287, 305, 410, 427, 490, 523, 574, 610, 820, 854, 980, 1046, 1148, 1220, 1435, 1708, 2009, 2092, 2135, 2501, 2615, 2870, 2989, 3661, 4018, 4270, 5002, 5230, 5740, 5978, 7322, 8036, 8540, 10004, 10045, 10460, 11956, 12505, 14644, 14945, 17507, 18305, 20090, 21443, 25010, 25627, 29890, 31903, 35014, 36610, 40180, 42886, 50020, 51254, 59780, 63806, 70028, 73220, 85772, 87535, 102508, 107215, 122549, 127612, 128135, 150101, 159515, 175070, 214430, 223321, 245098, 256270, 300202, 319030, 350140, 428860, 446642, 490196, 512540, 600404, 612745, 638060, 750505, 893284, 1050707, 1116605, 1225490, 1308023, 1501010, 1563247, 2101414, 2233210, 2450980, 2616046, 3002020, 3126494, 4202828, 4466420, 5232092, 5253535, 6252988, 6540115, 7816235, 9156161, 10507070, 13080230, 15632470, 18312322, 21014140, 26160460, 31264940, 36624644, 45780805, 64093127, 91561610, 128186254, 183123220, 256372508, 320465635, 640931270, 1281862540]

約数ペア:

[(1, 1281862540), (2, 640931270), (4, 320465635), (5, 256372508), (7, 183123220), (10, 128186254), (14, 91561610), (20, 64093127), (28, 45780805), (35, 36624644), (41, 31264940), (49, 26160460), (61, 21014140), (70, 18312322), (82, 15632470), (98, 13080230), (122, 10507070), (140, 9156161), (164, 7816235), (196, 6540115), (205, 6252988), (244, 5253535), (245, 5232092), (287, 4466420), (305, 4202828), (410, 3126494), (427, 3002020), (490, 2616046), (523, 2450980), (574, 2233210), (610, 2101414), (820, 1563247), (854, 1501010), (980, 1308023), (1046, 1225490), (1148, 1116605), (1220, 1050707), (1435, 893284), (1708, 750505), (2009, 638060), (2092, 612745), (2135, 600404), (2501, 512540), (2615, 490196), (2870, 446642), (2989, 428860), (3661, 350140), (4018, 319030), (4270, 300202), (5002, 256270), (5230, 245098), (5740, 223321), (5978, 214430), (7322, 175070), (8036, 159515), (8540, 150101), (10004, 128135), (10045, 127612), (10460, 122549), (11956, 107215), (12505, 102508), (14644, 87535), (14945, 85772), (17507, 73220), (18305, 70028), (20090, 63806), (21443, 59780), (25010, 51254), (25627, 50020), (29890, 42886), (31903, 40180), (35014, 36610)]