20907600

素因数分解:

$2^4\times 3^1\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1$

素因数の和:178

約数の個数: 240

約数和(自身を含む): 81185280

約数和(自身を除く): 60277680

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 19, 20, 21, 24, 25, 28, 30, 35, 38, 40, 42, 48, 50, 56, 57, 60, 70, 75, 76, 80, 84, 95, 100, 105, 112, 114, 120, 131, 133, 140, 150, 152, 168, 175, 190, 200, 210, 228, 240, 262, 266, 280, 285, 300, 304, 336, 350, 380, 393, 399, 400, 420, 456, 475, 524, 525, 532, 560, 570, 600, 655, 665, 700, 760, 786, 798, 840, 912, 917, 950, 1048, 1050, 1064, 1140, 1200, 1310, 1330, 1400, 1425, 1520, 1572, 1596, 1680, 1834, 1900, 1965, 1995, 2096, 2100, 2128, 2280, 2489, 2620, 2660, 2751, 2800, 2850, 3144, 3192, 3275, 3325, 3668, 3800, 3930, 3990, 4200, 4560, 4585, 4978, 5240, 5320, 5502, 5700, 6288, 6384, 6550, 6650, 7336, 7467, 7600, 7860, 7980, 8400, 9170, 9825, 9956, 9975, 10480, 10640, 11004, 11400, 12445, 13100, 13300, 13755, 14672, 14934, 15720, 15960, 17423, 18340, 19650, 19912, 19950, 22008, 22800, 22925, 24890, 26200, 26600, 27510, 29868, 31440, 31920, 34846, 36680, 37335, 39300, 39824, 39900, 44016, 45850, 49780, 52269, 52400, 53200, 55020, 59736, 62225, 68775, 69692, 73360, 74670, 78600, 79800, 87115, 91700, 99560, 104538, 110040, 119472, 124450, 137550, 139384, 149340, 157200, 159600, 174230, 183400, 186675, 199120, 209076, 220080, 248900, 261345, 275100, 278768, 298680, 348460, 366800, 373350, 418152, 435575, 497800, 522690, 550200, 597360, 696920, 746700, 836304, 871150, 995600, 1045380, 1100400, 1306725, 1393840, 1493400, 1742300, 2090760, 2613450, 2986800, 3484600, 4181520, 5226900, 6969200, 10453800, 20907600]

約数ペア:

[(1, 20907600), (2, 10453800), (3, 6969200), (4, 5226900), (5, 4181520), (6, 3484600), (7, 2986800), (8, 2613450), (10, 2090760), (12, 1742300), (14, 1493400), (15, 1393840), (16, 1306725), (19, 1100400), (20, 1045380), (21, 995600), (24, 871150), (25, 836304), (28, 746700), (30, 696920), (35, 597360), (38, 550200), (40, 522690), (42, 497800), (48, 435575), (50, 418152), (56, 373350), (57, 366800), (60, 348460), (70, 298680), (75, 278768), (76, 275100), (80, 261345), (84, 248900), (95, 220080), (100, 209076), (105, 199120), (112, 186675), (114, 183400), (120, 174230), (131, 159600), (133, 157200), (140, 149340), (150, 139384), (152, 137550), (168, 124450), (175, 119472), (190, 110040), (200, 104538), (210, 99560), (228, 91700), (240, 87115), (262, 79800), (266, 78600), (280, 74670), (285, 73360), (300, 69692), (304, 68775), (336, 62225), (350, 59736), (380, 55020), (393, 53200), (399, 52400), (400, 52269), (420, 49780), (456, 45850), (475, 44016), (524, 39900), (525, 39824), (532, 39300), (560, 37335), (570, 36680), (600, 34846), (655, 31920), (665, 31440), (700, 29868), (760, 27510), (786, 26600), (798, 26200), (840, 24890), (912, 22925), (917, 22800), (950, 22008), (1048, 19950), (1050, 19912), (1064, 19650), (1140, 18340), (1200, 17423), (1310, 15960), (1330, 15720), (1400, 14934), (1425, 14672), (1520, 13755), (1572, 13300), (1596, 13100), (1680, 12445), (1834, 11400), (1900, 11004), (1965, 10640), (1995, 10480), (2096, 9975), (2100, 9956), (2128, 9825), (2280, 9170), (2489, 8400), (2620, 7980), (2660, 7860), (2751, 7600), (2800, 7467), (2850, 7336), (3144, 6650), (3192, 6550), (3275, 6384), (3325, 6288), (3668, 5700), (3800, 5502), (3930, 5320), (3990, 5240), (4200, 4978), (4560, 4585)]