81001620

素因数分解:

$2^2\times 3^5\times 5^1\times 7^1\times {\mathrm{2381}}^1$

素因数の和:2412

約数の個数: 144

約数和(自身を含む): 291328128

約数和(自身を除く): 210326508

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 81, 84, 90, 105, 108, 126, 135, 140, 162, 180, 189, 210, 243, 252, 270, 315, 324, 378, 405, 420, 486, 540, 567, 630, 756, 810, 945, 972, 1134, 1215, 1260, 1620, 1701, 1890, 2268, 2381, 2430, 2835, 3402, 3780, 4762, 4860, 5670, 6804, 7143, 8505, 9524, 11340, 11905, 14286, 16667, 17010, 21429, 23810, 28572, 33334, 34020, 35715, 42858, 47620, 50001, 64287, 66668, 71430, 83335, 85716, 100002, 107145, 128574, 142860, 150003, 166670, 192861, 200004, 214290, 250005, 257148, 300006, 321435, 333340, 385722, 428580, 450009, 500010, 578583, 600012, 642870, 750015, 771444, 900018, 964305, 1000020, 1157166, 1285740, 1350027, 1500030, 1800036, 1928610, 2250045, 2314332, 2700054, 2892915, 3000060, 3857220, 4050081, 4500090, 5400108, 5785830, 6750135, 8100162, 9000180, 11571660, 13500270, 16200324, 20250405, 27000540, 40500810, 81001620]

約数ペア:

[(1, 81001620), (2, 40500810), (3, 27000540), (4, 20250405), (5, 16200324), (6, 13500270), (7, 11571660), (9, 9000180), (10, 8100162), (12, 6750135), (14, 5785830), (15, 5400108), (18, 4500090), (20, 4050081), (21, 3857220), (27, 3000060), (28, 2892915), (30, 2700054), (35, 2314332), (36, 2250045), (42, 1928610), (45, 1800036), (54, 1500030), (60, 1350027), (63, 1285740), (70, 1157166), (81, 1000020), (84, 964305), (90, 900018), (105, 771444), (108, 750015), (126, 642870), (135, 600012), (140, 578583), (162, 500010), (180, 450009), (189, 428580), (210, 385722), (243, 333340), (252, 321435), (270, 300006), (315, 257148), (324, 250005), (378, 214290), (405, 200004), (420, 192861), (486, 166670), (540, 150003), (567, 142860), (630, 128574), (756, 107145), (810, 100002), (945, 85716), (972, 83335), (1134, 71430), (1215, 66668), (1260, 64287), (1620, 50001), (1701, 47620), (1890, 42858), (2268, 35715), (2381, 34020), (2430, 33334), (2835, 28572), (3402, 23810), (3780, 21429), (4762, 17010), (4860, 16667), (5670, 14286), (6804, 11905), (7143, 11340), (8505, 9524)]