19990432

素因数分解:

$2^5\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1$

素因数の和:115

約数の個数: 144

約数和(自身を含む): 53434080

約数和(自身を除く): 33443648

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 19, 22, 28, 32, 38, 44, 49, 56, 61, 76, 77, 88, 98, 112, 122, 133, 152, 154, 176, 196, 209, 224, 244, 266, 304, 308, 352, 392, 418, 427, 488, 532, 539, 608, 616, 671, 784, 836, 854, 931, 976, 1064, 1078, 1159, 1232, 1342, 1463, 1568, 1672, 1708, 1862, 1952, 2128, 2156, 2318, 2464, 2684, 2926, 2989, 3344, 3416, 3724, 4256, 4312, 4636, 4697, 5368, 5852, 5978, 6688, 6832, 7448, 8113, 8624, 9272, 9394, 10241, 10736, 11704, 11956, 12749, 13664, 14896, 16226, 17248, 18544, 18788, 20482, 21472, 23408, 23912, 25498, 29792, 32452, 32879, 37088, 37576, 40964, 46816, 47824, 50996, 56791, 64904, 65758, 75152, 81928, 89243, 95648, 101992, 113582, 129808, 131516, 150304, 163856, 178486, 203984, 227164, 259616, 263032, 327712, 356972, 407968, 454328, 526064, 624701, 713944, 908656, 1052128, 1249402, 1427888, 1817312, 2498804, 2855776, 4997608, 9995216, 19990432]

約数ペア:

[(1, 19990432), (2, 9995216), (4, 4997608), (7, 2855776), (8, 2498804), (11, 1817312), (14, 1427888), (16, 1249402), (19, 1052128), (22, 908656), (28, 713944), (32, 624701), (38, 526064), (44, 454328), (49, 407968), (56, 356972), (61, 327712), (76, 263032), (77, 259616), (88, 227164), (98, 203984), (112, 178486), (122, 163856), (133, 150304), (152, 131516), (154, 129808), (176, 113582), (196, 101992), (209, 95648), (224, 89243), (244, 81928), (266, 75152), (304, 65758), (308, 64904), (352, 56791), (392, 50996), (418, 47824), (427, 46816), (488, 40964), (532, 37576), (539, 37088), (608, 32879), (616, 32452), (671, 29792), (784, 25498), (836, 23912), (854, 23408), (931, 21472), (976, 20482), (1064, 18788), (1078, 18544), (1159, 17248), (1232, 16226), (1342, 14896), (1463, 13664), (1568, 12749), (1672, 11956), (1708, 11704), (1862, 10736), (1952, 10241), (2128, 9394), (2156, 9272), (2318, 8624), (2464, 8113), (2684, 7448), (2926, 6832), (2989, 6688), (3344, 5978), (3416, 5852), (3724, 5368), (4256, 4697), (4312, 4636)]