261431856

素因数分解:

$2^4\times 3^2\times 7^3\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:181

約数の個数: 240

約数和(自身を含む): 876928000

約数和(自身を除く): 615496144

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 36, 42, 48, 49, 56, 63, 67, 72, 79, 84, 98, 112, 126, 134, 144, 147, 158, 168, 196, 201, 237, 252, 268, 294, 316, 336, 343, 392, 402, 441, 469, 474, 504, 536, 553, 588, 603, 632, 686, 711, 784, 804, 882, 938, 948, 1008, 1029, 1072, 1106, 1176, 1206, 1264, 1372, 1407, 1422, 1608, 1659, 1764, 1876, 1896, 2058, 2212, 2352, 2412, 2744, 2814, 2844, 3087, 3216, 3283, 3318, 3528, 3752, 3792, 3871, 4116, 4221, 4424, 4824, 4977, 5293, 5488, 5628, 5688, 6174, 6566, 6636, 7056, 7504, 7742, 8232, 8442, 8848, 9648, 9849, 9954, 10586, 11256, 11376, 11613, 12348, 13132, 13272, 15484, 15879, 16464, 16884, 19698, 19908, 21172, 22512, 22981, 23226, 24696, 26264, 26544, 27097, 29547, 30968, 31758, 33768, 34839, 37051, 39396, 39816, 42344, 45962, 46452, 47637, 49392, 52528, 54194, 59094, 61936, 63516, 67536, 68943, 69678, 74102, 78792, 79632, 81291, 84688, 91924, 92904, 95274, 108388, 111153, 118188, 127032, 137886, 139356, 148204, 157584, 162582, 183848, 185808, 190548, 206829, 216776, 222306, 236376, 243873, 254064, 259357, 275772, 278712, 296408, 325164, 333459, 367696, 381096, 413658, 433552, 444612, 472752, 487746, 518714, 551544, 557424, 592816, 650328, 666918, 762192, 778071, 827316, 889224, 975492, 1037428, 1103088, 1300656, 1333836, 1556142, 1654632, 1778448, 1815499, 1950984, 2074856, 2334213, 2667672, 3112284, 3309264, 3630998, 3901968, 4149712, 4668426, 5335344, 5446497, 6224568, 7261996, 9336852, 10892994, 12449136, 14523992, 16339491, 18673704, 21785988, 29047984, 32678982, 37347408, 43571976, 65357964, 87143952, 130715928, 261431856]

約数ペア:

[(1, 261431856), (2, 130715928), (3, 87143952), (4, 65357964), (6, 43571976), (7, 37347408), (8, 32678982), (9, 29047984), (12, 21785988), (14, 18673704), (16, 16339491), (18, 14523992), (21, 12449136), (24, 10892994), (28, 9336852), (36, 7261996), (42, 6224568), (48, 5446497), (49, 5335344), (56, 4668426), (63, 4149712), (67, 3901968), (72, 3630998), (79, 3309264), (84, 3112284), (98, 2667672), (112, 2334213), (126, 2074856), (134, 1950984), (144, 1815499), (147, 1778448), (158, 1654632), (168, 1556142), (196, 1333836), (201, 1300656), (237, 1103088), (252, 1037428), (268, 975492), (294, 889224), (316, 827316), (336, 778071), (343, 762192), (392, 666918), (402, 650328), (441, 592816), (469, 557424), (474, 551544), (504, 518714), (536, 487746), (553, 472752), (588, 444612), (603, 433552), (632, 413658), (686, 381096), (711, 367696), (784, 333459), (804, 325164), (882, 296408), (938, 278712), (948, 275772), (1008, 259357), (1029, 254064), (1072, 243873), (1106, 236376), (1176, 222306), (1206, 216776), (1264, 206829), (1372, 190548), (1407, 185808), (1422, 183848), (1608, 162582), (1659, 157584), (1764, 148204), (1876, 139356), (1896, 137886), (2058, 127032), (2212, 118188), (2352, 111153), (2412, 108388), (2744, 95274), (2814, 92904), (2844, 91924), (3087, 84688), (3216, 81291), (3283, 79632), (3318, 78792), (3528, 74102), (3752, 69678), (3792, 68943), (3871, 67536), (4116, 63516), (4221, 61936), (4424, 59094), (4824, 54194), (4977, 52528), (5293, 49392), (5488, 47637), (5628, 46452), (5688, 45962), (6174, 42344), (6566, 39816), (6636, 39396), (7056, 37051), (7504, 34839), (7742, 33768), (8232, 31758), (8442, 30968), (8848, 29547), (9648, 27097), (9849, 26544), (9954, 26264), (10586, 24696), (11256, 23226), (11376, 22981), (11613, 22512), (12348, 21172), (13132, 19908), (13272, 19698), (15484, 16884), (15879, 16464)]