81427920

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{2551}}^1$

素因数の和:2593

約数の個数: 160

約数和(自身を含む): 303790080

約数和(自身を除く): 222362160

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 19, 20, 21, 24, 28, 30, 35, 38, 40, 42, 48, 56, 57, 60, 70, 76, 80, 84, 95, 105, 112, 114, 120, 133, 140, 152, 168, 190, 210, 228, 240, 266, 280, 285, 304, 336, 380, 399, 420, 456, 532, 560, 570, 665, 760, 798, 840, 912, 1064, 1140, 1330, 1520, 1596, 1680, 1995, 2128, 2280, 2551, 2660, 3192, 3990, 4560, 5102, 5320, 6384, 7653, 7980, 10204, 10640, 12755, 15306, 15960, 17857, 20408, 25510, 30612, 31920, 35714, 38265, 40816, 48469, 51020, 53571, 61224, 71428, 76530, 89285, 96938, 102040, 107142, 122448, 142856, 145407, 153060, 178570, 193876, 204080, 214284, 242345, 267855, 285712, 290814, 306120, 339283, 357140, 387752, 428568, 484690, 535710, 581628, 612240, 678566, 714280, 727035, 775504, 857136, 969380, 1017849, 1071420, 1163256, 1357132, 1428560, 1454070, 1696415, 1938760, 2035698, 2142840, 2326512, 2714264, 2908140, 3392830, 3877520, 4071396, 4285680, 5089245, 5428528, 5816280, 6785660, 8142792, 10178490, 11632560, 13571320, 16285584, 20356980, 27142640, 40713960, 81427920]

約数ペア:

[(1, 81427920), (2, 40713960), (3, 27142640), (4, 20356980), (5, 16285584), (6, 13571320), (7, 11632560), (8, 10178490), (10, 8142792), (12, 6785660), (14, 5816280), (15, 5428528), (16, 5089245), (19, 4285680), (20, 4071396), (21, 3877520), (24, 3392830), (28, 2908140), (30, 2714264), (35, 2326512), (38, 2142840), (40, 2035698), (42, 1938760), (48, 1696415), (56, 1454070), (57, 1428560), (60, 1357132), (70, 1163256), (76, 1071420), (80, 1017849), (84, 969380), (95, 857136), (105, 775504), (112, 727035), (114, 714280), (120, 678566), (133, 612240), (140, 581628), (152, 535710), (168, 484690), (190, 428568), (210, 387752), (228, 357140), (240, 339283), (266, 306120), (280, 290814), (285, 285712), (304, 267855), (336, 242345), (380, 214284), (399, 204080), (420, 193876), (456, 178570), (532, 153060), (560, 145407), (570, 142856), (665, 122448), (760, 107142), (798, 102040), (840, 96938), (912, 89285), (1064, 76530), (1140, 71428), (1330, 61224), (1520, 53571), (1596, 51020), (1680, 48469), (1995, 40816), (2128, 38265), (2280, 35714), (2551, 31920), (2660, 30612), (3192, 25510), (3990, 20408), (4560, 17857), (5102, 15960), (5320, 15306), (6384, 12755), (7653, 10640), (7980, 10204)]