257390640

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{257}}^1$

素因数の和:396

約数の個数: 240

約数和(自身を含む): 943252128

約数和(自身を除く): 685861488

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 80, 90, 104, 107, 117, 120, 130, 144, 156, 180, 195, 208, 214, 234, 240, 257, 260, 312, 321, 360, 390, 428, 468, 514, 520, 535, 585, 624, 642, 720, 771, 780, 856, 936, 963, 1028, 1040, 1070, 1170, 1284, 1285, 1391, 1542, 1560, 1605, 1712, 1872, 1926, 2056, 2140, 2313, 2340, 2568, 2570, 2782, 3084, 3120, 3210, 3341, 3852, 3855, 4112, 4173, 4280, 4626, 4680, 4815, 5136, 5140, 5564, 6168, 6420, 6682, 6955, 7704, 7710, 8346, 8560, 9252, 9360, 9630, 10023, 10280, 11128, 11565, 12336, 12519, 12840, 13364, 13910, 15408, 15420, 16692, 16705, 18504, 19260, 20046, 20560, 20865, 22256, 23130, 25038, 25680, 26728, 27499, 27820, 30069, 30840, 33384, 33410, 37008, 38520, 40092, 41730, 46260, 50076, 50115, 53456, 54998, 55640, 60138, 61680, 62595, 66768, 66820, 77040, 80184, 82497, 83460, 92520, 100152, 100230, 109996, 111280, 120276, 125190, 133640, 137495, 150345, 160368, 164994, 166920, 185040, 200304, 200460, 219992, 240552, 247491, 250380, 267280, 274990, 300690, 329988, 333840, 357487, 400920, 412485, 439984, 481104, 494982, 500760, 549980, 601380, 659976, 714974, 801840, 824970, 989964, 1001520, 1072461, 1099960, 1202760, 1237455, 1319952, 1429948, 1649940, 1787435, 1979928, 2144922, 2199920, 2405520, 2474910, 2859896, 3217383, 3299880, 3574870, 3959856, 4289844, 4949820, 5362305, 5719792, 6434766, 6599760, 7149740, 8579688, 9899640, 10724610, 12869532, 14299480, 16086915, 17159376, 19799280, 21449220, 25739064, 28598960, 32173830, 42898440, 51478128, 64347660, 85796880, 128695320, 257390640]

約数ペア:

[(1, 257390640), (2, 128695320), (3, 85796880), (4, 64347660), (5, 51478128), (6, 42898440), (8, 32173830), (9, 28598960), (10, 25739064), (12, 21449220), (13, 19799280), (15, 17159376), (16, 16086915), (18, 14299480), (20, 12869532), (24, 10724610), (26, 9899640), (30, 8579688), (36, 7149740), (39, 6599760), (40, 6434766), (45, 5719792), (48, 5362305), (52, 4949820), (60, 4289844), (65, 3959856), (72, 3574870), (78, 3299880), (80, 3217383), (90, 2859896), (104, 2474910), (107, 2405520), (117, 2199920), (120, 2144922), (130, 1979928), (144, 1787435), (156, 1649940), (180, 1429948), (195, 1319952), (208, 1237455), (214, 1202760), (234, 1099960), (240, 1072461), (257, 1001520), (260, 989964), (312, 824970), (321, 801840), (360, 714974), (390, 659976), (428, 601380), (468, 549980), (514, 500760), (520, 494982), (535, 481104), (585, 439984), (624, 412485), (642, 400920), (720, 357487), (771, 333840), (780, 329988), (856, 300690), (936, 274990), (963, 267280), (1028, 250380), (1040, 247491), (1070, 240552), (1170, 219992), (1284, 200460), (1285, 200304), (1391, 185040), (1542, 166920), (1560, 164994), (1605, 160368), (1712, 150345), (1872, 137495), (1926, 133640), (2056, 125190), (2140, 120276), (2313, 111280), (2340, 109996), (2568, 100230), (2570, 100152), (2782, 92520), (3084, 83460), (3120, 82497), (3210, 80184), (3341, 77040), (3852, 66820), (3855, 66768), (4112, 62595), (4173, 61680), (4280, 60138), (4626, 55640), (4680, 54998), (4815, 53456), (5136, 50115), (5140, 50076), (5564, 46260), (6168, 41730), (6420, 40092), (6682, 38520), (6955, 37008), (7704, 33410), (7710, 33384), (8346, 30840), (8560, 30069), (9252, 27820), (9360, 27499), (9630, 26728), (10023, 25680), (10280, 25038), (11128, 23130), (11565, 22256), (12336, 20865), (12519, 20560), (12840, 20046), (13364, 19260), (13910, 18504), (15408, 16705), (15420, 16692)]