81176480

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{599}}^1$

素因数の和:643

約数の個数: 144

約数和(自身を含む): 241315200

約数和(自身を除く): 160138720

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 121, 140, 154, 160, 176, 220, 224, 242, 280, 308, 352, 385, 440, 484, 560, 599, 605, 616, 770, 847, 880, 968, 1120, 1198, 1210, 1232, 1540, 1694, 1760, 1936, 2396, 2420, 2464, 2995, 3080, 3388, 3872, 4193, 4235, 4792, 4840, 5990, 6160, 6589, 6776, 8386, 8470, 9584, 9680, 11980, 12320, 13178, 13552, 16772, 16940, 19168, 19360, 20965, 23960, 26356, 27104, 32945, 33544, 33880, 41930, 46123, 47920, 52712, 65890, 67088, 67760, 72479, 83860, 92246, 95840, 105424, 131780, 134176, 135520, 144958, 167720, 184492, 210848, 230615, 263560, 289916, 335440, 362395, 368984, 461230, 507353, 527120, 579832, 670880, 724790, 737968, 922460, 1014706, 1054240, 1159664, 1449580, 1475936, 1844920, 2029412, 2319328, 2536765, 2899160, 3689840, 4058824, 5073530, 5798320, 7379680, 8117648, 10147060, 11596640, 16235296, 20294120, 40588240, 81176480]

約数ペア:

[(1, 81176480), (2, 40588240), (4, 20294120), (5, 16235296), (7, 11596640), (8, 10147060), (10, 8117648), (11, 7379680), (14, 5798320), (16, 5073530), (20, 4058824), (22, 3689840), (28, 2899160), (32, 2536765), (35, 2319328), (40, 2029412), (44, 1844920), (55, 1475936), (56, 1449580), (70, 1159664), (77, 1054240), (80, 1014706), (88, 922460), (110, 737968), (112, 724790), (121, 670880), (140, 579832), (154, 527120), (160, 507353), (176, 461230), (220, 368984), (224, 362395), (242, 335440), (280, 289916), (308, 263560), (352, 230615), (385, 210848), (440, 184492), (484, 167720), (560, 144958), (599, 135520), (605, 134176), (616, 131780), (770, 105424), (847, 95840), (880, 92246), (968, 83860), (1120, 72479), (1198, 67760), (1210, 67088), (1232, 65890), (1540, 52712), (1694, 47920), (1760, 46123), (1936, 41930), (2396, 33880), (2420, 33544), (2464, 32945), (2995, 27104), (3080, 26356), (3388, 23960), (3872, 20965), (4193, 19360), (4235, 19168), (4792, 16940), (4840, 16772), (5990, 13552), (6160, 13178), (6589, 12320), (6776, 11980), (8386, 9680), (8470, 9584)]