278989620

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1381}}^1$

素因数の和:1450

約数の個数: 192

約数和(自身を含む): 988141056

約数和(自身を除く): 709151436

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 37, 39, 42, 52, 60, 65, 70, 74, 78, 84, 91, 105, 111, 130, 140, 148, 156, 182, 185, 195, 210, 222, 259, 260, 273, 364, 370, 390, 420, 444, 455, 481, 518, 546, 555, 740, 777, 780, 910, 962, 1036, 1092, 1110, 1295, 1365, 1381, 1443, 1554, 1820, 1924, 2220, 2405, 2590, 2730, 2762, 2886, 3108, 3367, 3885, 4143, 4810, 5180, 5460, 5524, 5772, 6734, 6905, 7215, 7770, 8286, 9620, 9667, 10101, 13468, 13810, 14430, 15540, 16572, 16835, 17953, 19334, 20202, 20715, 27620, 28860, 29001, 33670, 35906, 38668, 40404, 41430, 48335, 50505, 51097, 53859, 58002, 67340, 71812, 82860, 89765, 96670, 101010, 102194, 107718, 116004, 125671, 145005, 153291, 179530, 193340, 202020, 204388, 215436, 251342, 255485, 269295, 290010, 306582, 357679, 359060, 377013, 502684, 510970, 538590, 580020, 613164, 628355, 664261, 715358, 754026, 766455, 1021940, 1073037, 1077180, 1256710, 1328522, 1430716, 1508052, 1532910, 1788395, 1885065, 1992783, 2146074, 2513420, 2657044, 3065820, 3321305, 3576790, 3770130, 3985566, 4292148, 4649827, 5365185, 6642610, 7153580, 7540260, 7971132, 9299654, 9963915, 10730370, 13285220, 13949481, 18599308, 19927830, 21460740, 23249135, 27898962, 39855660, 46498270, 55797924, 69747405, 92996540, 139494810, 278989620]

約数ペア:

[(1, 278989620), (2, 139494810), (3, 92996540), (4, 69747405), (5, 55797924), (6, 46498270), (7, 39855660), (10, 27898962), (12, 23249135), (13, 21460740), (14, 19927830), (15, 18599308), (20, 13949481), (21, 13285220), (26, 10730370), (28, 9963915), (30, 9299654), (35, 7971132), (37, 7540260), (39, 7153580), (42, 6642610), (52, 5365185), (60, 4649827), (65, 4292148), (70, 3985566), (74, 3770130), (78, 3576790), (84, 3321305), (91, 3065820), (105, 2657044), (111, 2513420), (130, 2146074), (140, 1992783), (148, 1885065), (156, 1788395), (182, 1532910), (185, 1508052), (195, 1430716), (210, 1328522), (222, 1256710), (259, 1077180), (260, 1073037), (273, 1021940), (364, 766455), (370, 754026), (390, 715358), (420, 664261), (444, 628355), (455, 613164), (481, 580020), (518, 538590), (546, 510970), (555, 502684), (740, 377013), (777, 359060), (780, 357679), (910, 306582), (962, 290010), (1036, 269295), (1092, 255485), (1110, 251342), (1295, 215436), (1365, 204388), (1381, 202020), (1443, 193340), (1554, 179530), (1820, 153291), (1924, 145005), (2220, 125671), (2405, 116004), (2590, 107718), (2730, 102194), (2762, 101010), (2886, 96670), (3108, 89765), (3367, 82860), (3885, 71812), (4143, 67340), (4810, 58002), (5180, 53859), (5460, 51097), (5524, 50505), (5772, 48335), (6734, 41430), (6905, 40404), (7215, 38668), (7770, 35906), (8286, 33670), (9620, 29001), (9667, 28860), (10101, 27620), (13468, 20715), (13810, 20202), (14430, 19334), (15540, 17953), (16572, 16835)]