19991664

素因数分解:

$2^4\times 3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{601}}^1$

素因数の和:636

約数の個数: 160

約数和(自身を含む): 71662080

約数和(自身を除く): 51670416

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 11, 12, 14, 16, 18, 21, 22, 24, 27, 28, 33, 36, 42, 44, 48, 54, 56, 63, 66, 72, 77, 84, 88, 99, 108, 112, 126, 132, 144, 154, 168, 176, 189, 198, 216, 231, 252, 264, 297, 308, 336, 378, 396, 432, 462, 504, 528, 594, 601, 616, 693, 756, 792, 924, 1008, 1188, 1202, 1232, 1386, 1512, 1584, 1803, 1848, 2079, 2376, 2404, 2772, 3024, 3606, 3696, 4158, 4207, 4752, 4808, 5409, 5544, 6611, 7212, 8316, 8414, 9616, 10818, 11088, 12621, 13222, 14424, 16227, 16632, 16828, 19833, 21636, 25242, 26444, 28848, 32454, 33264, 33656, 37863, 39666, 43272, 46277, 50484, 52888, 59499, 64908, 67312, 75726, 79332, 86544, 92554, 100968, 105776, 113589, 118998, 129816, 138831, 151452, 158664, 178497, 185108, 201936, 227178, 237996, 259632, 277662, 302904, 317328, 356994, 370216, 416493, 454356, 475992, 555324, 605808, 713988, 740432, 832986, 908712, 951984, 1110648, 1249479, 1427976, 1665972, 1817424, 2221296, 2498958, 2855952, 3331944, 4997916, 6663888, 9995832, 19991664]

約数ペア:

[(1, 19991664), (2, 9995832), (3, 6663888), (4, 4997916), (6, 3331944), (7, 2855952), (8, 2498958), (9, 2221296), (11, 1817424), (12, 1665972), (14, 1427976), (16, 1249479), (18, 1110648), (21, 951984), (22, 908712), (24, 832986), (27, 740432), (28, 713988), (33, 605808), (36, 555324), (42, 475992), (44, 454356), (48, 416493), (54, 370216), (56, 356994), (63, 317328), (66, 302904), (72, 277662), (77, 259632), (84, 237996), (88, 227178), (99, 201936), (108, 185108), (112, 178497), (126, 158664), (132, 151452), (144, 138831), (154, 129816), (168, 118998), (176, 113589), (189, 105776), (198, 100968), (216, 92554), (231, 86544), (252, 79332), (264, 75726), (297, 67312), (308, 64908), (336, 59499), (378, 52888), (396, 50484), (432, 46277), (462, 43272), (504, 39666), (528, 37863), (594, 33656), (601, 33264), (616, 32454), (693, 28848), (756, 26444), (792, 25242), (924, 21636), (1008, 19833), (1188, 16828), (1202, 16632), (1232, 16227), (1386, 14424), (1512, 13222), (1584, 12621), (1803, 11088), (1848, 10818), (2079, 9616), (2376, 8414), (2404, 8316), (2772, 7212), (3024, 6611), (3606, 5544), (3696, 5409), (4158, 4808), (4207, 4752)]