256456620

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{5501}}^1$

素因数の和:5560

約数の個数: 144

約数和(自身を含む): 913243968

約数和(自身を除く): 656787348

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 37, 42, 45, 60, 63, 70, 74, 84, 90, 105, 111, 126, 140, 148, 180, 185, 210, 222, 252, 259, 315, 333, 370, 420, 444, 518, 555, 630, 666, 740, 777, 1036, 1110, 1260, 1295, 1332, 1554, 1665, 2220, 2331, 2590, 3108, 3330, 3885, 4662, 5180, 5501, 6660, 7770, 9324, 11002, 11655, 15540, 16503, 22004, 23310, 27505, 33006, 38507, 46620, 49509, 55010, 66012, 77014, 82515, 99018, 110020, 115521, 154028, 165030, 192535, 198036, 203537, 231042, 247545, 330060, 346563, 385070, 407074, 462084, 495090, 577605, 610611, 693126, 770140, 814148, 990180, 1017685, 1155210, 1221222, 1386252, 1424759, 1732815, 1831833, 2035370, 2310420, 2442444, 2849518, 3053055, 3465630, 3663666, 4070740, 4274277, 5699036, 6106110, 6931260, 7123795, 7327332, 8548554, 9159165, 12212220, 12822831, 14247590, 17097108, 18318330, 21371385, 25645662, 28495180, 36636660, 42742770, 51291324, 64114155, 85485540, 128228310, 256456620]

約数ペア:

[(1, 256456620), (2, 128228310), (3, 85485540), (4, 64114155), (5, 51291324), (6, 42742770), (7, 36636660), (9, 28495180), (10, 25645662), (12, 21371385), (14, 18318330), (15, 17097108), (18, 14247590), (20, 12822831), (21, 12212220), (28, 9159165), (30, 8548554), (35, 7327332), (36, 7123795), (37, 6931260), (42, 6106110), (45, 5699036), (60, 4274277), (63, 4070740), (70, 3663666), (74, 3465630), (84, 3053055), (90, 2849518), (105, 2442444), (111, 2310420), (126, 2035370), (140, 1831833), (148, 1732815), (180, 1424759), (185, 1386252), (210, 1221222), (222, 1155210), (252, 1017685), (259, 990180), (315, 814148), (333, 770140), (370, 693126), (420, 610611), (444, 577605), (518, 495090), (555, 462084), (630, 407074), (666, 385070), (740, 346563), (777, 330060), (1036, 247545), (1110, 231042), (1260, 203537), (1295, 198036), (1332, 192535), (1554, 165030), (1665, 154028), (2220, 115521), (2331, 110020), (2590, 99018), (3108, 82515), (3330, 77014), (3885, 66012), (4662, 55010), (5180, 49509), (5501, 46620), (6660, 38507), (7770, 33006), (9324, 27505), (11002, 23310), (11655, 22004), (15540, 16503)]