20564320

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:133

約数の個数: 144

約数和(自身を含む): 58777488

約数和(自身を除く): 38213168

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 43, 49, 56, 61, 70, 80, 86, 98, 112, 122, 140, 160, 172, 196, 215, 224, 244, 245, 280, 301, 305, 344, 392, 427, 430, 488, 490, 560, 602, 610, 688, 784, 854, 860, 976, 980, 1120, 1204, 1220, 1376, 1505, 1568, 1708, 1720, 1952, 1960, 2107, 2135, 2408, 2440, 2623, 2989, 3010, 3416, 3440, 3920, 4214, 4270, 4816, 4880, 5246, 5978, 6020, 6832, 6880, 7840, 8428, 8540, 9632, 9760, 10492, 10535, 11956, 12040, 13115, 13664, 14945, 16856, 17080, 18361, 20984, 21070, 23912, 24080, 26230, 29890, 33712, 34160, 36722, 41968, 42140, 47824, 48160, 52460, 59780, 67424, 68320, 73444, 83936, 84280, 91805, 95648, 104920, 119560, 128527, 146888, 168560, 183610, 209840, 239120, 257054, 293776, 337120, 367220, 419680, 478240, 514108, 587552, 642635, 734440, 1028216, 1285270, 1468880, 2056432, 2570540, 2937760, 4112864, 5141080, 10282160, 20564320]

約数ペア:

[(1, 20564320), (2, 10282160), (4, 5141080), (5, 4112864), (7, 2937760), (8, 2570540), (10, 2056432), (14, 1468880), (16, 1285270), (20, 1028216), (28, 734440), (32, 642635), (35, 587552), (40, 514108), (43, 478240), (49, 419680), (56, 367220), (61, 337120), (70, 293776), (80, 257054), (86, 239120), (98, 209840), (112, 183610), (122, 168560), (140, 146888), (160, 128527), (172, 119560), (196, 104920), (215, 95648), (224, 91805), (244, 84280), (245, 83936), (280, 73444), (301, 68320), (305, 67424), (344, 59780), (392, 52460), (427, 48160), (430, 47824), (488, 42140), (490, 41968), (560, 36722), (602, 34160), (610, 33712), (688, 29890), (784, 26230), (854, 24080), (860, 23912), (976, 21070), (980, 20984), (1120, 18361), (1204, 17080), (1220, 16856), (1376, 14945), (1505, 13664), (1568, 13115), (1708, 12040), (1720, 11956), (1952, 10535), (1960, 10492), (2107, 9760), (2135, 9632), (2408, 8540), (2440, 8428), (2623, 7840), (2989, 6880), (3010, 6832), (3416, 6020), (3440, 5978), (3920, 5246), (4214, 4880), (4270, 4816)]