257726560

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{571}}^1$

素因数の和:637

約数の個数: 192

約数和(自身を含む): 774918144

約数和(自身を除く): 517191584

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 31, 32, 35, 40, 52, 56, 62, 65, 70, 80, 91, 104, 112, 124, 130, 140, 155, 160, 182, 208, 217, 224, 248, 260, 280, 310, 364, 403, 416, 434, 455, 496, 520, 560, 571, 620, 728, 806, 868, 910, 992, 1040, 1085, 1120, 1142, 1240, 1456, 1612, 1736, 1820, 2015, 2080, 2170, 2284, 2480, 2821, 2855, 2912, 3224, 3472, 3640, 3997, 4030, 4340, 4568, 4960, 5642, 5710, 6448, 6944, 7280, 7423, 7994, 8060, 8680, 9136, 11284, 11420, 12896, 14105, 14560, 14846, 15988, 16120, 17360, 17701, 18272, 19985, 22568, 22840, 28210, 29692, 31976, 32240, 34720, 35402, 37115, 39970, 45136, 45680, 51961, 56420, 59384, 63952, 64480, 70804, 74230, 79940, 88505, 90272, 91360, 103922, 112840, 118768, 123907, 127904, 141608, 148460, 159880, 177010, 207844, 225680, 230113, 237536, 247814, 259805, 283216, 296920, 319760, 354020, 415688, 451360, 460226, 495628, 519610, 566432, 593840, 619535, 639520, 708040, 831376, 920452, 991256, 1039220, 1150565, 1187680, 1239070, 1416080, 1610791, 1662752, 1840904, 1982512, 2078440, 2301130, 2478140, 2832160, 3221582, 3681808, 3965024, 4156880, 4602260, 4956280, 6443164, 7363616, 8053955, 8313760, 9204520, 9912560, 12886328, 16107910, 18409040, 19825120, 25772656, 32215820, 36818080, 51545312, 64431640, 128863280, 257726560]

約数ペア:

[(1, 257726560), (2, 128863280), (4, 64431640), (5, 51545312), (7, 36818080), (8, 32215820), (10, 25772656), (13, 19825120), (14, 18409040), (16, 16107910), (20, 12886328), (26, 9912560), (28, 9204520), (31, 8313760), (32, 8053955), (35, 7363616), (40, 6443164), (52, 4956280), (56, 4602260), (62, 4156880), (65, 3965024), (70, 3681808), (80, 3221582), (91, 2832160), (104, 2478140), (112, 2301130), (124, 2078440), (130, 1982512), (140, 1840904), (155, 1662752), (160, 1610791), (182, 1416080), (208, 1239070), (217, 1187680), (224, 1150565), (248, 1039220), (260, 991256), (280, 920452), (310, 831376), (364, 708040), (403, 639520), (416, 619535), (434, 593840), (455, 566432), (496, 519610), (520, 495628), (560, 460226), (571, 451360), (620, 415688), (728, 354020), (806, 319760), (868, 296920), (910, 283216), (992, 259805), (1040, 247814), (1085, 237536), (1120, 230113), (1142, 225680), (1240, 207844), (1456, 177010), (1612, 159880), (1736, 148460), (1820, 141608), (2015, 127904), (2080, 123907), (2170, 118768), (2284, 112840), (2480, 103922), (2821, 91360), (2855, 90272), (2912, 88505), (3224, 79940), (3472, 74230), (3640, 70804), (3997, 64480), (4030, 63952), (4340, 59384), (4568, 56420), (4960, 51961), (5642, 45680), (5710, 45136), (6448, 39970), (6944, 37115), (7280, 35402), (7423, 34720), (7994, 32240), (8060, 31976), (8680, 29692), (9136, 28210), (11284, 22840), (11420, 22568), (12896, 19985), (14105, 18272), (14560, 17701), (14846, 17360), (15988, 16120)]