31998720

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{641}}^1$

素因数の和:678

約数の個数: 144

約数和(自身を含む): 110228832

約数和(自身を除く): 78230112

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 64, 65, 78, 80, 96, 104, 120, 128, 130, 156, 160, 192, 195, 208, 240, 256, 260, 312, 320, 384, 390, 416, 480, 520, 624, 640, 641, 768, 780, 832, 960, 1040, 1248, 1280, 1282, 1560, 1664, 1920, 1923, 2080, 2496, 2564, 3120, 3205, 3328, 3840, 3846, 4160, 4992, 5128, 6240, 6410, 7692, 8320, 8333, 9615, 9984, 10256, 12480, 12820, 15384, 16640, 16666, 19230, 20512, 24960, 24999, 25640, 30768, 33332, 38460, 41024, 41665, 49920, 49998, 51280, 61536, 66664, 76920, 82048, 83330, 99996, 102560, 123072, 124995, 133328, 153840, 164096, 166660, 199992, 205120, 246144, 249990, 266656, 307680, 333320, 399984, 410240, 492288, 499980, 533312, 615360, 666640, 799968, 820480, 999960, 1066624, 1230720, 1333280, 1599936, 1999920, 2133248, 2461440, 2666560, 3199872, 3999840, 5333120, 6399744, 7999680, 10666240, 15999360, 31998720]

約数ペア:

[(1, 31998720), (2, 15999360), (3, 10666240), (4, 7999680), (5, 6399744), (6, 5333120), (8, 3999840), (10, 3199872), (12, 2666560), (13, 2461440), (15, 2133248), (16, 1999920), (20, 1599936), (24, 1333280), (26, 1230720), (30, 1066624), (32, 999960), (39, 820480), (40, 799968), (48, 666640), (52, 615360), (60, 533312), (64, 499980), (65, 492288), (78, 410240), (80, 399984), (96, 333320), (104, 307680), (120, 266656), (128, 249990), (130, 246144), (156, 205120), (160, 199992), (192, 166660), (195, 164096), (208, 153840), (240, 133328), (256, 124995), (260, 123072), (312, 102560), (320, 99996), (384, 83330), (390, 82048), (416, 76920), (480, 66664), (520, 61536), (624, 51280), (640, 49998), (641, 49920), (768, 41665), (780, 41024), (832, 38460), (960, 33332), (1040, 30768), (1248, 25640), (1280, 24999), (1282, 24960), (1560, 20512), (1664, 19230), (1920, 16666), (1923, 16640), (2080, 15384), (2496, 12820), (2564, 12480), (3120, 10256), (3205, 9984), (3328, 9615), (3840, 8333), (3846, 8320), (4160, 7692), (4992, 6410), (5128, 6240)]