19951360

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1$

素因数の和:154

約数の個数: 144

約数和(自身を含む): 56659680

約数和(自身を除く): 36708320

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 32, 40, 44, 52, 55, 64, 65, 80, 88, 104, 109, 110, 128, 130, 143, 160, 176, 208, 218, 220, 256, 260, 286, 320, 352, 416, 436, 440, 520, 545, 572, 640, 704, 715, 832, 872, 880, 1040, 1090, 1144, 1199, 1280, 1408, 1417, 1430, 1664, 1744, 1760, 2080, 2180, 2288, 2398, 2816, 2834, 2860, 3328, 3488, 3520, 4160, 4360, 4576, 4796, 5668, 5720, 5995, 6976, 7040, 7085, 8320, 8720, 9152, 9592, 11336, 11440, 11990, 13952, 14080, 14170, 15587, 16640, 17440, 18304, 19184, 22672, 22880, 23980, 27904, 28340, 31174, 34880, 36608, 38368, 45344, 45760, 47960, 56680, 62348, 69760, 76736, 77935, 90688, 91520, 95920, 113360, 124696, 139520, 153472, 155870, 181376, 183040, 191840, 226720, 249392, 306944, 311740, 362752, 383680, 453440, 498784, 623480, 767360, 906880, 997568, 1246960, 1534720, 1813760, 1995136, 2493920, 3990272, 4987840, 9975680, 19951360]

約数ペア:

[(1, 19951360), (2, 9975680), (4, 4987840), (5, 3990272), (8, 2493920), (10, 1995136), (11, 1813760), (13, 1534720), (16, 1246960), (20, 997568), (22, 906880), (26, 767360), (32, 623480), (40, 498784), (44, 453440), (52, 383680), (55, 362752), (64, 311740), (65, 306944), (80, 249392), (88, 226720), (104, 191840), (109, 183040), (110, 181376), (128, 155870), (130, 153472), (143, 139520), (160, 124696), (176, 113360), (208, 95920), (218, 91520), (220, 90688), (256, 77935), (260, 76736), (286, 69760), (320, 62348), (352, 56680), (416, 47960), (436, 45760), (440, 45344), (520, 38368), (545, 36608), (572, 34880), (640, 31174), (704, 28340), (715, 27904), (832, 23980), (872, 22880), (880, 22672), (1040, 19184), (1090, 18304), (1144, 17440), (1199, 16640), (1280, 15587), (1408, 14170), (1417, 14080), (1430, 13952), (1664, 11990), (1744, 11440), (1760, 11336), (2080, 9592), (2180, 9152), (2288, 8720), (2398, 8320), (2816, 7085), (2834, 7040), (2860, 6976), (3328, 5995), (3488, 5720), (3520, 5668), (4160, 4796), (4360, 4576)]