256990560

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{131}}^1$

素因数の和:277

約数の個数: 192

約数和(自身を含む): 841446144

約数和(自身を除く): 584455584

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 61, 67, 80, 96, 120, 122, 131, 134, 160, 183, 201, 240, 244, 262, 268, 305, 335, 366, 393, 402, 480, 488, 524, 536, 610, 655, 670, 732, 786, 804, 915, 976, 1005, 1048, 1072, 1220, 1310, 1340, 1464, 1572, 1608, 1830, 1952, 1965, 2010, 2096, 2144, 2440, 2620, 2680, 2928, 3144, 3216, 3660, 3930, 4020, 4087, 4192, 4880, 5240, 5360, 5856, 6288, 6432, 7320, 7860, 7991, 8040, 8174, 8777, 9760, 10480, 10720, 12261, 12576, 14640, 15720, 15982, 16080, 16348, 17554, 20435, 20960, 23973, 24522, 26331, 29280, 31440, 31964, 32160, 32696, 35108, 39955, 40870, 43885, 47946, 49044, 52662, 61305, 62880, 63928, 65392, 70216, 79910, 81740, 87770, 95892, 98088, 105324, 119865, 122610, 127856, 130784, 131655, 140432, 159820, 163480, 175540, 191784, 196176, 210648, 239730, 245220, 255712, 263310, 280864, 319640, 326960, 351080, 383568, 392352, 421296, 479460, 490440, 526620, 535397, 639280, 653920, 702160, 767136, 842592, 958920, 980880, 1053240, 1070794, 1278560, 1404320, 1606191, 1917840, 1961760, 2106480, 2141588, 2676985, 3212382, 3835680, 4212960, 4283176, 5353970, 6424764, 8030955, 8566352, 10707940, 12849528, 16061910, 17132704, 21415880, 25699056, 32123820, 42831760, 51398112, 64247640, 85663520, 128495280, 256990560]

約数ペア:

[(1, 256990560), (2, 128495280), (3, 85663520), (4, 64247640), (5, 51398112), (6, 42831760), (8, 32123820), (10, 25699056), (12, 21415880), (15, 17132704), (16, 16061910), (20, 12849528), (24, 10707940), (30, 8566352), (32, 8030955), (40, 6424764), (48, 5353970), (60, 4283176), (61, 4212960), (67, 3835680), (80, 3212382), (96, 2676985), (120, 2141588), (122, 2106480), (131, 1961760), (134, 1917840), (160, 1606191), (183, 1404320), (201, 1278560), (240, 1070794), (244, 1053240), (262, 980880), (268, 958920), (305, 842592), (335, 767136), (366, 702160), (393, 653920), (402, 639280), (480, 535397), (488, 526620), (524, 490440), (536, 479460), (610, 421296), (655, 392352), (670, 383568), (732, 351080), (786, 326960), (804, 319640), (915, 280864), (976, 263310), (1005, 255712), (1048, 245220), (1072, 239730), (1220, 210648), (1310, 196176), (1340, 191784), (1464, 175540), (1572, 163480), (1608, 159820), (1830, 140432), (1952, 131655), (1965, 130784), (2010, 127856), (2096, 122610), (2144, 119865), (2440, 105324), (2620, 98088), (2680, 95892), (2928, 87770), (3144, 81740), (3216, 79910), (3660, 70216), (3930, 65392), (4020, 63928), (4087, 62880), (4192, 61305), (4880, 52662), (5240, 49044), (5360, 47946), (5856, 43885), (6288, 40870), (6432, 39955), (7320, 35108), (7860, 32696), (7991, 32160), (8040, 31964), (8174, 31440), (8777, 29280), (9760, 26331), (10480, 24522), (10720, 23973), (12261, 20960), (12576, 20435), (14640, 17554), (15720, 16348), (15982, 16080)]