20921094726

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{115013}}^1$

素因数の和:115157

約数の個数: 64

約数和(自身を含む): 49288559616

約数和(自身を除く): 28367464890

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 61, 71, 122, 142, 183, 213, 366, 426, 427, 497, 854, 994, 1281, 1491, 2562, 2982, 4331, 8662, 12993, 25986, 30317, 60634, 90951, 115013, 181902, 230026, 345039, 690078, 805091, 1610182, 2415273, 4830546, 7015793, 8165923, 14031586, 16331846, 21047379, 24497769, 42094758, 48995538, 49110551, 57161461, 98221102, 114322922, 147331653, 171484383, 294663306, 342968766, 498121303, 996242606, 1494363909, 2988727818, 3486849121, 6973698242, 10460547363, 20921094726]

約数ペア:

[(1, 20921094726), (2, 10460547363), (3, 6973698242), (6, 3486849121), (7, 2988727818), (14, 1494363909), (21, 996242606), (42, 498121303), (61, 342968766), (71, 294663306), (122, 171484383), (142, 147331653), (183, 114322922), (213, 98221102), (366, 57161461), (426, 49110551), (427, 48995538), (497, 42094758), (854, 24497769), (994, 21047379), (1281, 16331846), (1491, 14031586), (2562, 8165923), (2982, 7015793), (4331, 4830546), (8662, 2415273), (12993, 1610182), (25986, 805091), (30317, 690078), (60634, 345039), (90951, 230026), (115013, 181902)]