19991328

素因数分解:

$2^5\times 3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{419}}^1$

素因数の和:510

約数の個数: 96

約数和(自身を含む): 60963840

約数和(自身を除く): 40972512

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 56, 71, 84, 96, 112, 142, 168, 213, 224, 284, 336, 419, 426, 497, 568, 672, 838, 852, 994, 1136, 1257, 1491, 1676, 1704, 1988, 2272, 2514, 2933, 2982, 3352, 3408, 3976, 5028, 5866, 5964, 6704, 6816, 7952, 8799, 10056, 11732, 11928, 13408, 15904, 17598, 20112, 23464, 23856, 29749, 35196, 40224, 46928, 47712, 59498, 70392, 89247, 93856, 118996, 140784, 178494, 208243, 237992, 281568, 356988, 416486, 475984, 624729, 713976, 832972, 951968, 1249458, 1427952, 1665944, 2498916, 2855904, 3331888, 4997832, 6663776, 9995664, 19991328]

約数ペア:

[(1, 19991328), (2, 9995664), (3, 6663776), (4, 4997832), (6, 3331888), (7, 2855904), (8, 2498916), (12, 1665944), (14, 1427952), (16, 1249458), (21, 951968), (24, 832972), (28, 713976), (32, 624729), (42, 475984), (48, 416486), (56, 356988), (71, 281568), (84, 237992), (96, 208243), (112, 178494), (142, 140784), (168, 118996), (213, 93856), (224, 89247), (284, 70392), (336, 59498), (419, 47712), (426, 46928), (497, 40224), (568, 35196), (672, 29749), (838, 23856), (852, 23464), (994, 20112), (1136, 17598), (1257, 15904), (1491, 13408), (1676, 11928), (1704, 11732), (1988, 10056), (2272, 8799), (2514, 7952), (2933, 6816), (2982, 6704), (3352, 5964), (3408, 5866), (3976, 5028)]