1981043840

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^2\times {\mathrm{3221}}^1$

素因数の和:3302

約数の個数: 96

約数和(自身を含む): 4895152380

約数和(自身を除く): 2914108540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 961, 992, 1240, 1922, 1984, 2480, 3221, 3844, 3968, 4805, 4960, 6442, 7688, 9610, 9920, 12884, 15376, 16105, 19220, 19840, 25768, 30752, 32210, 38440, 51536, 61504, 64420, 76880, 99851, 103072, 123008, 128840, 153760, 199702, 206144, 257680, 307520, 399404, 412288, 499255, 515360, 615040, 798808, 998510, 1030720, 1597616, 1997020, 2061440, 3095381, 3195232, 3994040, 6190762, 6390464, 7988080, 12381524, 12780928, 15476905, 15976160, 24763048, 30953810, 31952320, 49526096, 61907620, 63904640, 99052192, 123815240, 198104384, 247630480, 396208768, 495260960, 990521920, 1981043840]

約数ペア:

[(1, 1981043840), (2, 990521920), (4, 495260960), (5, 396208768), (8, 247630480), (10, 198104384), (16, 123815240), (20, 99052192), (31, 63904640), (32, 61907620), (40, 49526096), (62, 31952320), (64, 30953810), (80, 24763048), (124, 15976160), (128, 15476905), (155, 12780928), (160, 12381524), (248, 7988080), (310, 6390464), (320, 6190762), (496, 3994040), (620, 3195232), (640, 3095381), (961, 2061440), (992, 1997020), (1240, 1597616), (1922, 1030720), (1984, 998510), (2480, 798808), (3221, 615040), (3844, 515360), (3968, 499255), (4805, 412288), (4960, 399404), (6442, 307520), (7688, 257680), (9610, 206144), (9920, 199702), (12884, 153760), (15376, 128840), (16105, 123008), (19220, 103072), (19840, 99851), (25768, 76880), (30752, 64420), (32210, 61504), (38440, 51536)]