31664880

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{199}}^1$

素因数の和:248

約数の個数: 240

約数和(自身を含む): 121867200

約数和(自身を除く): 90202320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 17, 18, 20, 24, 26, 30, 34, 36, 39, 40, 45, 48, 51, 52, 60, 65, 68, 72, 78, 80, 85, 90, 102, 104, 117, 120, 130, 136, 144, 153, 156, 170, 180, 195, 199, 204, 208, 221, 234, 240, 255, 260, 272, 306, 312, 340, 360, 390, 398, 408, 442, 468, 510, 520, 585, 597, 612, 624, 663, 680, 720, 765, 780, 796, 816, 884, 936, 995, 1020, 1040, 1105, 1170, 1194, 1224, 1326, 1360, 1530, 1560, 1592, 1768, 1791, 1872, 1989, 1990, 2040, 2210, 2340, 2388, 2448, 2587, 2652, 2985, 3060, 3120, 3184, 3315, 3383, 3536, 3582, 3978, 3980, 4080, 4420, 4680, 4776, 5174, 5304, 5970, 6120, 6630, 6766, 7164, 7761, 7956, 7960, 8840, 8955, 9360, 9552, 9945, 10149, 10348, 10608, 11940, 12240, 12935, 13260, 13532, 14328, 15522, 15912, 15920, 16915, 17680, 17910, 19890, 20298, 20696, 23283, 23880, 25870, 26520, 27064, 28656, 30447, 31044, 31824, 33830, 35820, 38805, 39780, 40596, 41392, 43979, 46566, 47760, 50745, 51740, 53040, 54128, 60894, 62088, 67660, 71640, 77610, 79560, 81192, 87958, 93132, 101490, 103480, 116415, 121788, 124176, 131937, 135320, 143280, 152235, 155220, 159120, 162384, 175916, 186264, 202980, 206960, 219895, 232830, 243576, 263874, 270640, 304470, 310440, 351832, 372528, 395811, 405960, 439790, 465660, 487152, 527748, 608940, 620880, 659685, 703664, 791622, 811920, 879580, 931320, 1055496, 1217880, 1319370, 1583244, 1759160, 1862640, 1979055, 2110992, 2435760, 2638740, 3166488, 3518320, 3958110, 5277480, 6332976, 7916220, 10554960, 15832440, 31664880]

約数ペア:

[(1, 31664880), (2, 15832440), (3, 10554960), (4, 7916220), (5, 6332976), (6, 5277480), (8, 3958110), (9, 3518320), (10, 3166488), (12, 2638740), (13, 2435760), (15, 2110992), (16, 1979055), (17, 1862640), (18, 1759160), (20, 1583244), (24, 1319370), (26, 1217880), (30, 1055496), (34, 931320), (36, 879580), (39, 811920), (40, 791622), (45, 703664), (48, 659685), (51, 620880), (52, 608940), (60, 527748), (65, 487152), (68, 465660), (72, 439790), (78, 405960), (80, 395811), (85, 372528), (90, 351832), (102, 310440), (104, 304470), (117, 270640), (120, 263874), (130, 243576), (136, 232830), (144, 219895), (153, 206960), (156, 202980), (170, 186264), (180, 175916), (195, 162384), (199, 159120), (204, 155220), (208, 152235), (221, 143280), (234, 135320), (240, 131937), (255, 124176), (260, 121788), (272, 116415), (306, 103480), (312, 101490), (340, 93132), (360, 87958), (390, 81192), (398, 79560), (408, 77610), (442, 71640), (468, 67660), (510, 62088), (520, 60894), (585, 54128), (597, 53040), (612, 51740), (624, 50745), (663, 47760), (680, 46566), (720, 43979), (765, 41392), (780, 40596), (796, 39780), (816, 38805), (884, 35820), (936, 33830), (995, 31824), (1020, 31044), (1040, 30447), (1105, 28656), (1170, 27064), (1194, 26520), (1224, 25870), (1326, 23880), (1360, 23283), (1530, 20696), (1560, 20298), (1592, 19890), (1768, 17910), (1791, 17680), (1872, 16915), (1989, 15920), (1990, 15912), (2040, 15522), (2210, 14328), (2340, 13532), (2388, 13260), (2448, 12935), (2587, 12240), (2652, 11940), (2985, 10608), (3060, 10348), (3120, 10149), (3184, 9945), (3315, 9552), (3383, 9360), (3536, 8955), (3582, 8840), (3978, 7960), (3980, 7956), (4080, 7761), (4420, 7164), (4680, 6766), (4776, 6630), (5174, 6120), (5304, 5970)]