21069888

素因数分解:

$2^6\times 3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{257}}^1$

素因数の和:340

約数の個数: 112

約数和(自身を含む): 65007744

約数和(自身を除く): 43937856

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 56, 61, 64, 84, 96, 112, 122, 168, 183, 192, 224, 244, 257, 336, 366, 427, 448, 488, 514, 672, 732, 771, 854, 976, 1028, 1281, 1344, 1464, 1542, 1708, 1799, 1952, 2056, 2562, 2928, 3084, 3416, 3598, 3904, 4112, 5124, 5397, 5856, 6168, 6832, 7196, 8224, 10248, 10794, 11712, 12336, 13664, 14392, 15677, 16448, 20496, 21588, 24672, 27328, 28784, 31354, 40992, 43176, 47031, 49344, 57568, 62708, 81984, 86352, 94062, 109739, 115136, 125416, 172704, 188124, 219478, 250832, 329217, 345408, 376248, 438956, 501664, 658434, 752496, 877912, 1003328, 1316868, 1504992, 1755824, 2633736, 3009984, 3511648, 5267472, 7023296, 10534944, 21069888]

約数ペア:

[(1, 21069888), (2, 10534944), (3, 7023296), (4, 5267472), (6, 3511648), (7, 3009984), (8, 2633736), (12, 1755824), (14, 1504992), (16, 1316868), (21, 1003328), (24, 877912), (28, 752496), (32, 658434), (42, 501664), (48, 438956), (56, 376248), (61, 345408), (64, 329217), (84, 250832), (96, 219478), (112, 188124), (122, 172704), (168, 125416), (183, 115136), (192, 109739), (224, 94062), (244, 86352), (257, 81984), (336, 62708), (366, 57568), (427, 49344), (448, 47031), (488, 43176), (514, 40992), (672, 31354), (732, 28784), (771, 27328), (854, 24672), (976, 21588), (1028, 20496), (1281, 16448), (1344, 15677), (1464, 14392), (1542, 13664), (1708, 12336), (1799, 11712), (1952, 10794), (2056, 10248), (2562, 8224), (2928, 7196), (3084, 6832), (3416, 6168), (3598, 5856), (3904, 5397), (4112, 5124)]