21721920

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{11}}^3\times {\mathrm{17}}^1$

素因数の和:70

約数の個数: 224

約数和(自身を含む): 80320896

約数和(自身を除く): 58598976

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 17, 20, 22, 24, 30, 32, 33, 34, 40, 44, 48, 51, 55, 60, 64, 66, 68, 80, 85, 88, 96, 102, 110, 120, 121, 132, 136, 160, 165, 170, 176, 187, 192, 204, 220, 240, 242, 255, 264, 272, 320, 330, 340, 352, 363, 374, 408, 440, 480, 484, 510, 528, 544, 561, 605, 660, 680, 704, 726, 748, 816, 880, 935, 960, 968, 1020, 1056, 1088, 1122, 1210, 1320, 1331, 1360, 1452, 1496, 1632, 1760, 1815, 1870, 1936, 2040, 2057, 2112, 2244, 2420, 2640, 2662, 2720, 2805, 2904, 2992, 3264, 3520, 3630, 3740, 3872, 3993, 4080, 4114, 4488, 4840, 5280, 5324, 5440, 5610, 5808, 5984, 6171, 6655, 7260, 7480, 7744, 7986, 8160, 8228, 8976, 9680, 10285, 10560, 10648, 11220, 11616, 11968, 12342, 13310, 14520, 14960, 15972, 16320, 16456, 17952, 19360, 19965, 20570, 21296, 22440, 22627, 23232, 24684, 26620, 29040, 29920, 30855, 31944, 32912, 35904, 38720, 39930, 41140, 42592, 44880, 45254, 49368, 53240, 58080, 59840, 61710, 63888, 65824, 67881, 79860, 82280, 85184, 89760, 90508, 98736, 106480, 113135, 116160, 123420, 127776, 131648, 135762, 159720, 164560, 179520, 181016, 197472, 212960, 226270, 246840, 255552, 271524, 319440, 329120, 339405, 362032, 394944, 425920, 452540, 493680, 543048, 638880, 658240, 678810, 724064, 905080, 987360, 1086096, 1277760, 1357620, 1448128, 1810160, 1974720, 2172192, 2715240, 3620320, 4344384, 5430480, 7240640, 10860960, 21721920]

約数ペア:

[(1, 21721920), (2, 10860960), (3, 7240640), (4, 5430480), (5, 4344384), (6, 3620320), (8, 2715240), (10, 2172192), (11, 1974720), (12, 1810160), (15, 1448128), (16, 1357620), (17, 1277760), (20, 1086096), (22, 987360), (24, 905080), (30, 724064), (32, 678810), (33, 658240), (34, 638880), (40, 543048), (44, 493680), (48, 452540), (51, 425920), (55, 394944), (60, 362032), (64, 339405), (66, 329120), (68, 319440), (80, 271524), (85, 255552), (88, 246840), (96, 226270), (102, 212960), (110, 197472), (120, 181016), (121, 179520), (132, 164560), (136, 159720), (160, 135762), (165, 131648), (170, 127776), (176, 123420), (187, 116160), (192, 113135), (204, 106480), (220, 98736), (240, 90508), (242, 89760), (255, 85184), (264, 82280), (272, 79860), (320, 67881), (330, 65824), (340, 63888), (352, 61710), (363, 59840), (374, 58080), (408, 53240), (440, 49368), (480, 45254), (484, 44880), (510, 42592), (528, 41140), (544, 39930), (561, 38720), (605, 35904), (660, 32912), (680, 31944), (704, 30855), (726, 29920), (748, 29040), (816, 26620), (880, 24684), (935, 23232), (960, 22627), (968, 22440), (1020, 21296), (1056, 20570), (1088, 19965), (1122, 19360), (1210, 17952), (1320, 16456), (1331, 16320), (1360, 15972), (1452, 14960), (1496, 14520), (1632, 13310), (1760, 12342), (1815, 11968), (1870, 11616), (1936, 11220), (2040, 10648), (2057, 10560), (2112, 10285), (2244, 9680), (2420, 8976), (2640, 8228), (2662, 8160), (2720, 7986), (2805, 7744), (2904, 7480), (2992, 7260), (3264, 6655), (3520, 6171), (3630, 5984), (3740, 5808), (3872, 5610), (3993, 5440), (4080, 5324), (4114, 5280), (4488, 4840)]