81637120

素因数分解:

$2^8\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1$

素因数の和:150

約数の個数: 144

約数和(自身を含む): 211921920

約数和(自身を除く): 130284800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 47, 59, 64, 80, 92, 94, 115, 118, 128, 160, 184, 188, 230, 235, 236, 256, 295, 320, 368, 376, 460, 470, 472, 590, 640, 736, 752, 920, 940, 944, 1081, 1180, 1280, 1357, 1472, 1504, 1840, 1880, 1888, 2162, 2360, 2714, 2773, 2944, 3008, 3680, 3760, 3776, 4324, 4720, 5405, 5428, 5546, 5888, 6016, 6785, 7360, 7520, 7552, 8648, 9440, 10810, 10856, 11092, 12032, 13570, 13865, 14720, 15040, 15104, 17296, 18880, 21620, 21712, 22184, 27140, 27730, 29440, 30080, 34592, 37760, 43240, 43424, 44368, 54280, 55460, 60160, 63779, 69184, 75520, 86480, 86848, 88736, 108560, 110920, 127558, 138368, 172960, 173696, 177472, 217120, 221840, 255116, 276736, 318895, 345920, 347392, 354944, 434240, 443680, 510232, 637790, 691840, 709888, 868480, 887360, 1020464, 1275580, 1383680, 1736960, 1774720, 2040928, 2551160, 3549440, 4081856, 5102320, 8163712, 10204640, 16327424, 20409280, 40818560, 81637120]

約数ペア:

[(1, 81637120), (2, 40818560), (4, 20409280), (5, 16327424), (8, 10204640), (10, 8163712), (16, 5102320), (20, 4081856), (23, 3549440), (32, 2551160), (40, 2040928), (46, 1774720), (47, 1736960), (59, 1383680), (64, 1275580), (80, 1020464), (92, 887360), (94, 868480), (115, 709888), (118, 691840), (128, 637790), (160, 510232), (184, 443680), (188, 434240), (230, 354944), (235, 347392), (236, 345920), (256, 318895), (295, 276736), (320, 255116), (368, 221840), (376, 217120), (460, 177472), (470, 173696), (472, 172960), (590, 138368), (640, 127558), (736, 110920), (752, 108560), (920, 88736), (940, 86848), (944, 86480), (1081, 75520), (1180, 69184), (1280, 63779), (1357, 60160), (1472, 55460), (1504, 54280), (1840, 44368), (1880, 43424), (1888, 43240), (2162, 37760), (2360, 34592), (2714, 30080), (2773, 29440), (2944, 27730), (3008, 27140), (3680, 22184), (3760, 21712), (3776, 21620), (4324, 18880), (4720, 17296), (5405, 15104), (5428, 15040), (5546, 14720), (5888, 13865), (6016, 13570), (6785, 12032), (7360, 11092), (7520, 10856), (7552, 10810), (8648, 9440)]