21028320

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{859}}^1$

素因数の和:897

約数の個数: 144

約数和(自身を含む): 76068720

約数和(自身を除く): 55040400

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 30, 32, 34, 36, 40, 45, 48, 51, 60, 68, 72, 80, 85, 90, 96, 102, 120, 136, 144, 153, 160, 170, 180, 204, 240, 255, 272, 288, 306, 340, 360, 408, 480, 510, 544, 612, 680, 720, 765, 816, 859, 1020, 1224, 1360, 1440, 1530, 1632, 1718, 2040, 2448, 2577, 2720, 3060, 3436, 4080, 4295, 4896, 5154, 6120, 6872, 7731, 8160, 8590, 10308, 12240, 12885, 13744, 14603, 15462, 17180, 20616, 24480, 25770, 27488, 29206, 30924, 34360, 38655, 41232, 43809, 51540, 58412, 61848, 68720, 73015, 77310, 82464, 87618, 103080, 116824, 123696, 131427, 137440, 146030, 154620, 175236, 206160, 219045, 233648, 247392, 262854, 292060, 309240, 350472, 412320, 438090, 467296, 525708, 584120, 618480, 657135, 700944, 876180, 1051416, 1168240, 1236960, 1314270, 1401888, 1752360, 2102832, 2336480, 2628540, 3504720, 4205664, 5257080, 7009440, 10514160, 21028320]

約数ペア:

[(1, 21028320), (2, 10514160), (3, 7009440), (4, 5257080), (5, 4205664), (6, 3504720), (8, 2628540), (9, 2336480), (10, 2102832), (12, 1752360), (15, 1401888), (16, 1314270), (17, 1236960), (18, 1168240), (20, 1051416), (24, 876180), (30, 700944), (32, 657135), (34, 618480), (36, 584120), (40, 525708), (45, 467296), (48, 438090), (51, 412320), (60, 350472), (68, 309240), (72, 292060), (80, 262854), (85, 247392), (90, 233648), (96, 219045), (102, 206160), (120, 175236), (136, 154620), (144, 146030), (153, 137440), (160, 131427), (170, 123696), (180, 116824), (204, 103080), (240, 87618), (255, 82464), (272, 77310), (288, 73015), (306, 68720), (340, 61848), (360, 58412), (408, 51540), (480, 43809), (510, 41232), (544, 38655), (612, 34360), (680, 30924), (720, 29206), (765, 27488), (816, 25770), (859, 24480), (1020, 20616), (1224, 17180), (1360, 15462), (1440, 14603), (1530, 13744), (1632, 12885), (1718, 12240), (2040, 10308), (2448, 8590), (2577, 8160), (2720, 7731), (3060, 6872), (3436, 6120), (4080, 5154), (4295, 4896)]