68897920

素因数分解:

$2^7\times 5^1\times 7^2\times {\mathrm{13}}^3$

素因数の和:72

約数の個数: 192

約数和(自身を含む): 207559800

約数和(自身を除く): 138661880

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 49, 52, 56, 64, 65, 70, 80, 91, 98, 104, 112, 128, 130, 140, 160, 169, 182, 196, 208, 224, 245, 260, 280, 320, 338, 364, 392, 416, 448, 455, 490, 520, 560, 637, 640, 676, 728, 784, 832, 845, 896, 910, 980, 1040, 1120, 1183, 1274, 1352, 1456, 1568, 1664, 1690, 1820, 1960, 2080, 2197, 2240, 2366, 2548, 2704, 2912, 3136, 3185, 3380, 3640, 3920, 4160, 4394, 4480, 4732, 5096, 5408, 5824, 5915, 6272, 6370, 6760, 7280, 7840, 8281, 8320, 8788, 9464, 10192, 10816, 10985, 11648, 11830, 12740, 13520, 14560, 15379, 15680, 16562, 17576, 18928, 20384, 21632, 21970, 23660, 25480, 27040, 29120, 30758, 31360, 33124, 35152, 37856, 40768, 41405, 43940, 47320, 50960, 54080, 58240, 61516, 66248, 70304, 75712, 76895, 81536, 82810, 87880, 94640, 101920, 107653, 108160, 123032, 132496, 140608, 151424, 153790, 165620, 175760, 189280, 203840, 215306, 246064, 264992, 281216, 307580, 331240, 351520, 378560, 407680, 430612, 492128, 529984, 538265, 615160, 662480, 703040, 757120, 861224, 984256, 1059968, 1076530, 1230320, 1324960, 1406080, 1722448, 1968512, 2153060, 2460640, 2649920, 3444896, 4306120, 4921280, 5299840, 6889792, 8612240, 9842560, 13779584, 17224480, 34448960, 68897920]

約数ペア:

[(1, 68897920), (2, 34448960), (4, 17224480), (5, 13779584), (7, 9842560), (8, 8612240), (10, 6889792), (13, 5299840), (14, 4921280), (16, 4306120), (20, 3444896), (26, 2649920), (28, 2460640), (32, 2153060), (35, 1968512), (40, 1722448), (49, 1406080), (52, 1324960), (56, 1230320), (64, 1076530), (65, 1059968), (70, 984256), (80, 861224), (91, 757120), (98, 703040), (104, 662480), (112, 615160), (128, 538265), (130, 529984), (140, 492128), (160, 430612), (169, 407680), (182, 378560), (196, 351520), (208, 331240), (224, 307580), (245, 281216), (260, 264992), (280, 246064), (320, 215306), (338, 203840), (364, 189280), (392, 175760), (416, 165620), (448, 153790), (455, 151424), (490, 140608), (520, 132496), (560, 123032), (637, 108160), (640, 107653), (676, 101920), (728, 94640), (784, 87880), (832, 82810), (845, 81536), (896, 76895), (910, 75712), (980, 70304), (1040, 66248), (1120, 61516), (1183, 58240), (1274, 54080), (1352, 50960), (1456, 47320), (1568, 43940), (1664, 41405), (1690, 40768), (1820, 37856), (1960, 35152), (2080, 33124), (2197, 31360), (2240, 30758), (2366, 29120), (2548, 27040), (2704, 25480), (2912, 23660), (3136, 21970), (3185, 21632), (3380, 20384), (3640, 18928), (3920, 17576), (4160, 16562), (4394, 15680), (4480, 15379), (4732, 14560), (5096, 13520), (5408, 12740), (5824, 11830), (5915, 11648), (6272, 10985), (6370, 10816), (6760, 10192), (7280, 9464), (7840, 8788), (8281, 8320)]