21370440

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1$

素因数の和:156

約数の個数: 256

約数和(自身を含む): 83865600

約数和(自身を除く): 62495160

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 19, 20, 21, 24, 26, 28, 30, 35, 38, 39, 40, 42, 52, 56, 57, 60, 65, 70, 76, 78, 84, 91, 95, 103, 104, 105, 114, 120, 130, 133, 140, 152, 156, 168, 182, 190, 195, 206, 210, 228, 247, 260, 266, 273, 280, 285, 309, 312, 364, 380, 390, 399, 412, 420, 455, 456, 494, 515, 520, 532, 546, 570, 618, 665, 721, 728, 741, 760, 780, 798, 824, 840, 910, 988, 1030, 1064, 1092, 1140, 1235, 1236, 1330, 1339, 1365, 1442, 1482, 1545, 1560, 1596, 1729, 1820, 1957, 1976, 1995, 2060, 2163, 2184, 2280, 2470, 2472, 2660, 2678, 2730, 2884, 2964, 3090, 3192, 3458, 3605, 3640, 3705, 3914, 3990, 4017, 4120, 4326, 4940, 5187, 5320, 5356, 5460, 5768, 5871, 5928, 6180, 6695, 6916, 7210, 7410, 7828, 7980, 8034, 8645, 8652, 9373, 9785, 9880, 10374, 10712, 10815, 10920, 11742, 12360, 13390, 13699, 13832, 14420, 14820, 15656, 15960, 16068, 17290, 17304, 18746, 19570, 20085, 20748, 21630, 23484, 25441, 25935, 26780, 27398, 28119, 28840, 29355, 29640, 32136, 34580, 37492, 39140, 40170, 41097, 41496, 43260, 46865, 46968, 50882, 51870, 53560, 54796, 56238, 58710, 68495, 69160, 74984, 76323, 78280, 80340, 82194, 86520, 93730, 101764, 103740, 109592, 112476, 117420, 127205, 136990, 140595, 152646, 160680, 164388, 178087, 187460, 203528, 205485, 207480, 224952, 234840, 254410, 273980, 281190, 305292, 328776, 356174, 374920, 381615, 410970, 508820, 534261, 547960, 562380, 610584, 712348, 763230, 821940, 890435, 1017640, 1068522, 1124760, 1424696, 1526460, 1643880, 1780870, 2137044, 2671305, 3052920, 3561740, 4274088, 5342610, 7123480, 10685220, 21370440]

約数ペア:

[(1, 21370440), (2, 10685220), (3, 7123480), (4, 5342610), (5, 4274088), (6, 3561740), (7, 3052920), (8, 2671305), (10, 2137044), (12, 1780870), (13, 1643880), (14, 1526460), (15, 1424696), (19, 1124760), (20, 1068522), (21, 1017640), (24, 890435), (26, 821940), (28, 763230), (30, 712348), (35, 610584), (38, 562380), (39, 547960), (40, 534261), (42, 508820), (52, 410970), (56, 381615), (57, 374920), (60, 356174), (65, 328776), (70, 305292), (76, 281190), (78, 273980), (84, 254410), (91, 234840), (95, 224952), (103, 207480), (104, 205485), (105, 203528), (114, 187460), (120, 178087), (130, 164388), (133, 160680), (140, 152646), (152, 140595), (156, 136990), (168, 127205), (182, 117420), (190, 112476), (195, 109592), (206, 103740), (210, 101764), (228, 93730), (247, 86520), (260, 82194), (266, 80340), (273, 78280), (280, 76323), (285, 74984), (309, 69160), (312, 68495), (364, 58710), (380, 56238), (390, 54796), (399, 53560), (412, 51870), (420, 50882), (455, 46968), (456, 46865), (494, 43260), (515, 41496), (520, 41097), (532, 40170), (546, 39140), (570, 37492), (618, 34580), (665, 32136), (721, 29640), (728, 29355), (741, 28840), (760, 28119), (780, 27398), (798, 26780), (824, 25935), (840, 25441), (910, 23484), (988, 21630), (1030, 20748), (1064, 20085), (1092, 19570), (1140, 18746), (1235, 17304), (1236, 17290), (1330, 16068), (1339, 15960), (1365, 15656), (1442, 14820), (1482, 14420), (1545, 13832), (1560, 13699), (1596, 13390), (1729, 12360), (1820, 11742), (1957, 10920), (1976, 10815), (1995, 10712), (2060, 10374), (2163, 9880), (2184, 9785), (2280, 9373), (2470, 8652), (2472, 8645), (2660, 8034), (2678, 7980), (2730, 7828), (2884, 7410), (2964, 7210), (3090, 6916), (3192, 6695), (3458, 6180), (3605, 5928), (3640, 5871), (3705, 5768), (3914, 5460), (3990, 5356), (4017, 5320), (4120, 5187), (4326, 4940)]