81171840

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{631}}^1$

素因数の和:720

約数の個数: 128

約数和(自身を含む): 263013120

約数和(自身を除く): 181841280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 67, 80, 96, 120, 128, 134, 160, 192, 201, 240, 268, 320, 335, 384, 402, 480, 536, 631, 640, 670, 804, 960, 1005, 1072, 1262, 1340, 1608, 1893, 1920, 2010, 2144, 2524, 2680, 3155, 3216, 3786, 4020, 4288, 5048, 5360, 6310, 6432, 7572, 8040, 8576, 9465, 10096, 10720, 12620, 12864, 15144, 16080, 18930, 20192, 21440, 25240, 25728, 30288, 32160, 37860, 40384, 42277, 42880, 50480, 60576, 64320, 75720, 80768, 84554, 100960, 121152, 126831, 128640, 151440, 169108, 201920, 211385, 242304, 253662, 302880, 338216, 403840, 422770, 507324, 605760, 634155, 676432, 845540, 1014648, 1211520, 1268310, 1352864, 1691080, 2029296, 2536620, 2705728, 3382160, 4058592, 5073240, 5411456, 6764320, 8117184, 10146480, 13528640, 16234368, 20292960, 27057280, 40585920, 81171840]

約数ペア:

[(1, 81171840), (2, 40585920), (3, 27057280), (4, 20292960), (5, 16234368), (6, 13528640), (8, 10146480), (10, 8117184), (12, 6764320), (15, 5411456), (16, 5073240), (20, 4058592), (24, 3382160), (30, 2705728), (32, 2536620), (40, 2029296), (48, 1691080), (60, 1352864), (64, 1268310), (67, 1211520), (80, 1014648), (96, 845540), (120, 676432), (128, 634155), (134, 605760), (160, 507324), (192, 422770), (201, 403840), (240, 338216), (268, 302880), (320, 253662), (335, 242304), (384, 211385), (402, 201920), (480, 169108), (536, 151440), (631, 128640), (640, 126831), (670, 121152), (804, 100960), (960, 84554), (1005, 80768), (1072, 75720), (1262, 64320), (1340, 60576), (1608, 50480), (1893, 42880), (1920, 42277), (2010, 40384), (2144, 37860), (2524, 32160), (2680, 30288), (3155, 25728), (3216, 25240), (3786, 21440), (4020, 20192), (4288, 18930), (5048, 16080), (5360, 15144), (6310, 12864), (6432, 12620), (7572, 10720), (8040, 10096), (8576, 9465)]