638720880

素因数分解:

$2^4\times 3^1\times 5^1\times 7^3\times {\mathrm{7759}}^1$

素因数の和:7796

約数の個数: 160

約数和(自身を含む): 2309376000

約数和(自身を除く): 1670655120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 49, 56, 60, 70, 80, 84, 98, 105, 112, 120, 140, 147, 168, 196, 210, 240, 245, 280, 294, 336, 343, 392, 420, 490, 560, 588, 686, 735, 784, 840, 980, 1029, 1176, 1372, 1470, 1680, 1715, 1960, 2058, 2352, 2744, 2940, 3430, 3920, 4116, 5145, 5488, 5880, 6860, 7759, 8232, 10290, 11760, 13720, 15518, 16464, 20580, 23277, 27440, 31036, 38795, 41160, 46554, 54313, 62072, 77590, 82320, 93108, 108626, 116385, 124144, 155180, 162939, 186216, 217252, 232770, 271565, 310360, 325878, 372432, 380191, 434504, 465540, 543130, 620720, 651756, 760382, 814695, 869008, 931080, 1086260, 1140573, 1303512, 1520764, 1629390, 1862160, 1900955, 2172520, 2281146, 2607024, 2661337, 3041528, 3258780, 3801910, 4345040, 4562292, 5322674, 5702865, 6083056, 6517560, 7603820, 7984011, 9124584, 10645348, 11405730, 13035120, 13306685, 15207640, 15968022, 18249168, 21290696, 22811460, 26613370, 30415280, 31936044, 39920055, 42581392, 45622920, 53226740, 63872088, 79840110, 91245840, 106453480, 127744176, 159680220, 212906960, 319360440, 638720880]

約数ペア:

[(1, 638720880), (2, 319360440), (3, 212906960), (4, 159680220), (5, 127744176), (6, 106453480), (7, 91245840), (8, 79840110), (10, 63872088), (12, 53226740), (14, 45622920), (15, 42581392), (16, 39920055), (20, 31936044), (21, 30415280), (24, 26613370), (28, 22811460), (30, 21290696), (35, 18249168), (40, 15968022), (42, 15207640), (48, 13306685), (49, 13035120), (56, 11405730), (60, 10645348), (70, 9124584), (80, 7984011), (84, 7603820), (98, 6517560), (105, 6083056), (112, 5702865), (120, 5322674), (140, 4562292), (147, 4345040), (168, 3801910), (196, 3258780), (210, 3041528), (240, 2661337), (245, 2607024), (280, 2281146), (294, 2172520), (336, 1900955), (343, 1862160), (392, 1629390), (420, 1520764), (490, 1303512), (560, 1140573), (588, 1086260), (686, 931080), (735, 869008), (784, 814695), (840, 760382), (980, 651756), (1029, 620720), (1176, 543130), (1372, 465540), (1470, 434504), (1680, 380191), (1715, 372432), (1960, 325878), (2058, 310360), (2352, 271565), (2744, 232770), (2940, 217252), (3430, 186216), (3920, 162939), (4116, 155180), (5145, 124144), (5488, 116385), (5880, 108626), (6860, 93108), (7759, 82320), (8232, 77590), (10290, 62072), (11760, 54313), (13720, 46554), (15518, 41160), (16464, 38795), (20580, 31036), (23277, 27440)]