256408740

素因数分解:

$2^2\times 3^5\times 5^1\times 7^1\times {\mathrm{7537}}^1$

素因数の和:7568

約数の個数: 144

約数和(自身を含む): 921927552

約数和(自身を除く): 665518812

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, 2430, 2835, 3402, 3780, 4860, 5670, 6804, 7537, 8505, 11340, 15074, 17010, 22611, 30148, 34020, 37685, 45222, 52759, 67833, 75370, 90444, 105518, 113055, 135666, 150740, 158277, 203499, 211036, 226110, 263795, 271332, 316554, 339165, 406998, 452220, 474831, 527590, 610497, 633108, 678330, 791385, 813996, 949662, 1017495, 1055180, 1220994, 1356660, 1424493, 1582770, 1831491, 1899324, 2034990, 2374155, 2441988, 2848986, 3052485, 3165540, 3662982, 4069980, 4273479, 4748310, 5697972, 6104970, 7122465, 7325964, 8546958, 9157455, 9496620, 12209940, 12820437, 14244930, 17093916, 18314910, 21367395, 25640874, 28489860, 36629820, 42734790, 51281748, 64102185, 85469580, 128204370, 256408740]

約数ペア:

[(1, 256408740), (2, 128204370), (3, 85469580), (4, 64102185), (5, 51281748), (6, 42734790), (7, 36629820), (9, 28489860), (10, 25640874), (12, 21367395), (14, 18314910), (15, 17093916), (18, 14244930), (20, 12820437), (21, 12209940), (27, 9496620), (28, 9157455), (30, 8546958), (35, 7325964), (36, 7122465), (42, 6104970), (45, 5697972), (54, 4748310), (60, 4273479), (63, 4069980), (70, 3662982), (81, 3165540), (84, 3052485), (90, 2848986), (105, 2441988), (108, 2374155), (126, 2034990), (135, 1899324), (140, 1831491), (162, 1582770), (180, 1424493), (189, 1356660), (210, 1220994), (243, 1055180), (252, 1017495), (270, 949662), (315, 813996), (324, 791385), (378, 678330), (405, 633108), (420, 610497), (486, 527590), (540, 474831), (567, 452220), (630, 406998), (756, 339165), (810, 316554), (945, 271332), (972, 263795), (1134, 226110), (1215, 211036), (1260, 203499), (1620, 158277), (1701, 150740), (1890, 135666), (2268, 113055), (2430, 105518), (2835, 90444), (3402, 75370), (3780, 67833), (4860, 52759), (5670, 45222), (6804, 37685), (7537, 34020), (8505, 30148), (11340, 22611), (15074, 17010)]