256796540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{127}}^1$

素因数の和:268

約数の個数: 192

約数和(自身を含む): 736985088

約数和(自身を除く): 480188548

約数列:

[1, 2, 4, 5, 7, 10, 11, 13, 14, 20, 22, 26, 28, 35, 44, 52, 55, 65, 70, 77, 91, 101, 110, 127, 130, 140, 143, 154, 182, 202, 220, 254, 260, 286, 308, 364, 385, 404, 455, 505, 508, 572, 635, 707, 715, 770, 889, 910, 1001, 1010, 1111, 1270, 1313, 1397, 1414, 1430, 1540, 1651, 1778, 1820, 2002, 2020, 2222, 2540, 2626, 2794, 2828, 2860, 3302, 3535, 3556, 4004, 4444, 4445, 5005, 5252, 5555, 5588, 6565, 6604, 6985, 7070, 7777, 8255, 8890, 9191, 9779, 10010, 11110, 11557, 12827, 13130, 13970, 14140, 14443, 15554, 16510, 17780, 18161, 18382, 19558, 20020, 22220, 23114, 25654, 26260, 27940, 28886, 31108, 33020, 36322, 36764, 38885, 39116, 45955, 46228, 48895, 51308, 57772, 57785, 64135, 72215, 72644, 77770, 89789, 90805, 91910, 97790, 101101, 115570, 127127, 128270, 141097, 144430, 155540, 166751, 179578, 181610, 183820, 195580, 202202, 231140, 254254, 256540, 282194, 288860, 333502, 359156, 363220, 404404, 448945, 505505, 508508, 564388, 635635, 667004, 705485, 833755, 897890, 987679, 1011010, 1167257, 1271270, 1410970, 1667510, 1795780, 1834261, 1975358, 2022020, 2334514, 2542540, 2821940, 3335020, 3668522, 3950716, 4669028, 4938395, 5836285, 7337044, 9171305, 9876790, 11672570, 12839827, 18342610, 19753580, 23345140, 25679654, 36685220, 51359308, 64199135, 128398270, 256796540]

約数ペア:

[(1, 256796540), (2, 128398270), (4, 64199135), (5, 51359308), (7, 36685220), (10, 25679654), (11, 23345140), (13, 19753580), (14, 18342610), (20, 12839827), (22, 11672570), (26, 9876790), (28, 9171305), (35, 7337044), (44, 5836285), (52, 4938395), (55, 4669028), (65, 3950716), (70, 3668522), (77, 3335020), (91, 2821940), (101, 2542540), (110, 2334514), (127, 2022020), (130, 1975358), (140, 1834261), (143, 1795780), (154, 1667510), (182, 1410970), (202, 1271270), (220, 1167257), (254, 1011010), (260, 987679), (286, 897890), (308, 833755), (364, 705485), (385, 667004), (404, 635635), (455, 564388), (505, 508508), (508, 505505), (572, 448945), (635, 404404), (707, 363220), (715, 359156), (770, 333502), (889, 288860), (910, 282194), (1001, 256540), (1010, 254254), (1111, 231140), (1270, 202202), (1313, 195580), (1397, 183820), (1414, 181610), (1430, 179578), (1540, 166751), (1651, 155540), (1778, 144430), (1820, 141097), (2002, 128270), (2020, 127127), (2222, 115570), (2540, 101101), (2626, 97790), (2794, 91910), (2828, 90805), (2860, 89789), (3302, 77770), (3535, 72644), (3556, 72215), (4004, 64135), (4444, 57785), (4445, 57772), (5005, 51308), (5252, 48895), (5555, 46228), (5588, 45955), (6565, 39116), (6604, 38885), (6985, 36764), (7070, 36322), (7777, 33020), (8255, 31108), (8890, 28886), (9191, 27940), (9779, 26260), (10010, 25654), (11110, 23114), (11557, 22220), (12827, 20020), (13130, 19558), (13970, 18382), (14140, 18161), (14443, 17780), (15554, 16510)]