81627840

素因数分解:

$2^6\times 3^2\times 5^1\times 7^1\times {\mathrm{4049}}^1$

素因数の和:4079

約数の個数: 168

約数和(自身を含む): 320954400

約数和(自身を除く): 239326560

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 192, 210, 224, 240, 252, 280, 288, 315, 320, 336, 360, 420, 448, 480, 504, 560, 576, 630, 672, 720, 840, 960, 1008, 1120, 1260, 1344, 1440, 1680, 2016, 2240, 2520, 2880, 3360, 4032, 4049, 5040, 6720, 8098, 10080, 12147, 16196, 20160, 20245, 24294, 28343, 32392, 36441, 40490, 48588, 56686, 60735, 64784, 72882, 80980, 85029, 97176, 113372, 121470, 129568, 141715, 145764, 161960, 170058, 182205, 194352, 226744, 242940, 255087, 259136, 283430, 291528, 323920, 340116, 364410, 388704, 425145, 453488, 485880, 510174, 566860, 583056, 647840, 680232, 728820, 777408, 850290, 906976, 971760, 1020348, 1133720, 1166112, 1275435, 1295680, 1360464, 1457640, 1700580, 1813952, 1943520, 2040696, 2267440, 2332224, 2550870, 2720928, 2915280, 3401160, 3887040, 4081392, 4534880, 5101740, 5441856, 5830560, 6802320, 8162784, 9069760, 10203480, 11661120, 13604640, 16325568, 20406960, 27209280, 40813920, 81627840]

約数ペア:

[(1, 81627840), (2, 40813920), (3, 27209280), (4, 20406960), (5, 16325568), (6, 13604640), (7, 11661120), (8, 10203480), (9, 9069760), (10, 8162784), (12, 6802320), (14, 5830560), (15, 5441856), (16, 5101740), (18, 4534880), (20, 4081392), (21, 3887040), (24, 3401160), (28, 2915280), (30, 2720928), (32, 2550870), (35, 2332224), (36, 2267440), (40, 2040696), (42, 1943520), (45, 1813952), (48, 1700580), (56, 1457640), (60, 1360464), (63, 1295680), (64, 1275435), (70, 1166112), (72, 1133720), (80, 1020348), (84, 971760), (90, 906976), (96, 850290), (105, 777408), (112, 728820), (120, 680232), (126, 647840), (140, 583056), (144, 566860), (160, 510174), (168, 485880), (180, 453488), (192, 425145), (210, 388704), (224, 364410), (240, 340116), (252, 323920), (280, 291528), (288, 283430), (315, 259136), (320, 255087), (336, 242940), (360, 226744), (420, 194352), (448, 182205), (480, 170058), (504, 161960), (560, 145764), (576, 141715), (630, 129568), (672, 121470), (720, 113372), (840, 97176), (960, 85029), (1008, 80980), (1120, 72882), (1260, 64784), (1344, 60735), (1440, 56686), (1680, 48588), (2016, 40490), (2240, 36441), (2520, 32392), (2880, 28343), (3360, 24294), (4032, 20245), (4049, 20160), (5040, 16196), (6720, 12147), (8098, 10080)]