19971360

素因数分解:

$2^5\times 3^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1$

素因数の和:117

約数の個数: 240

約数和(自身を含む): 74644416

約数和(自身を除く): 54673056

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 27, 30, 32, 36, 40, 45, 46, 48, 54, 60, 67, 69, 72, 80, 81, 90, 92, 96, 108, 115, 120, 134, 135, 138, 144, 160, 162, 180, 184, 201, 207, 216, 230, 240, 268, 270, 276, 288, 324, 335, 345, 360, 368, 402, 405, 414, 432, 460, 480, 536, 540, 552, 603, 621, 648, 670, 690, 720, 736, 804, 810, 828, 864, 920, 1005, 1035, 1072, 1080, 1104, 1206, 1242, 1296, 1340, 1380, 1440, 1541, 1608, 1620, 1656, 1809, 1840, 1863, 2010, 2070, 2144, 2160, 2208, 2412, 2484, 2592, 2680, 2760, 3015, 3082, 3105, 3216, 3240, 3312, 3618, 3680, 3726, 4020, 4140, 4320, 4623, 4824, 4968, 5360, 5427, 5520, 6030, 6164, 6210, 6432, 6480, 6624, 7236, 7452, 7705, 8040, 8280, 9045, 9246, 9315, 9648, 9936, 10720, 10854, 11040, 12060, 12328, 12420, 12960, 13869, 14472, 14904, 15410, 16080, 16560, 18090, 18492, 18630, 19296, 19872, 21708, 23115, 24120, 24656, 24840, 27135, 27738, 28944, 29808, 30820, 32160, 33120, 36180, 36984, 37260, 41607, 43416, 46230, 48240, 49312, 49680, 54270, 55476, 57888, 59616, 61640, 69345, 72360, 73968, 74520, 83214, 86832, 92460, 96480, 99360, 108540, 110952, 123280, 124821, 138690, 144720, 147936, 149040, 166428, 173664, 184920, 208035, 217080, 221904, 246560, 249642, 277380, 289440, 298080, 332856, 369840, 416070, 434160, 443808, 499284, 554760, 624105, 665712, 739680, 832140, 868320, 998568, 1109520, 1248210, 1331424, 1664280, 1997136, 2219040, 2496420, 3328560, 3994272, 4992840, 6657120, 9985680, 19971360]

約数ペア:

[(1, 19971360), (2, 9985680), (3, 6657120), (4, 4992840), (5, 3994272), (6, 3328560), (8, 2496420), (9, 2219040), (10, 1997136), (12, 1664280), (15, 1331424), (16, 1248210), (18, 1109520), (20, 998568), (23, 868320), (24, 832140), (27, 739680), (30, 665712), (32, 624105), (36, 554760), (40, 499284), (45, 443808), (46, 434160), (48, 416070), (54, 369840), (60, 332856), (67, 298080), (69, 289440), (72, 277380), (80, 249642), (81, 246560), (90, 221904), (92, 217080), (96, 208035), (108, 184920), (115, 173664), (120, 166428), (134, 149040), (135, 147936), (138, 144720), (144, 138690), (160, 124821), (162, 123280), (180, 110952), (184, 108540), (201, 99360), (207, 96480), (216, 92460), (230, 86832), (240, 83214), (268, 74520), (270, 73968), (276, 72360), (288, 69345), (324, 61640), (335, 59616), (345, 57888), (360, 55476), (368, 54270), (402, 49680), (405, 49312), (414, 48240), (432, 46230), (460, 43416), (480, 41607), (536, 37260), (540, 36984), (552, 36180), (603, 33120), (621, 32160), (648, 30820), (670, 29808), (690, 28944), (720, 27738), (736, 27135), (804, 24840), (810, 24656), (828, 24120), (864, 23115), (920, 21708), (1005, 19872), (1035, 19296), (1072, 18630), (1080, 18492), (1104, 18090), (1206, 16560), (1242, 16080), (1296, 15410), (1340, 14904), (1380, 14472), (1440, 13869), (1541, 12960), (1608, 12420), (1620, 12328), (1656, 12060), (1809, 11040), (1840, 10854), (1863, 10720), (2010, 9936), (2070, 9648), (2144, 9315), (2160, 9246), (2208, 9045), (2412, 8280), (2484, 8040), (2592, 7705), (2680, 7452), (2760, 7236), (3015, 6624), (3082, 6480), (3105, 6432), (3216, 6210), (3240, 6164), (3312, 6030), (3618, 5520), (3680, 5427), (3726, 5360), (4020, 4968), (4140, 4824), (4320, 4623)]