20996957583

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^2\times {\mathrm{59}}^1\times {\mathrm{2011}}^1$

素因数の和:2189

約数の個数: 72

約数和(自身を含む): 35944621440

約数和(自身を除く): 14947663857

約数列:

[1, 3, 7, 9, 21, 53, 59, 63, 159, 177, 371, 413, 477, 531, 1113, 1239, 2011, 2809, 3127, 3339, 3717, 6033, 8427, 9381, 14077, 18099, 19663, 21889, 25281, 28143, 42231, 58989, 65667, 106583, 118649, 126693, 165731, 176967, 197001, 319749, 355947, 497193, 746081, 830543, 959247, 1067841, 1160117, 1491579, 2238243, 2491629, 3480351, 5648899, 6288397, 6714729, 7474887, 10441053, 16946697, 18865191, 39542293, 44018779, 50840091, 56595573, 118626879, 132056337, 333285041, 355880637, 396169011, 999855123, 2332995287, 2999565369, 6998985861, 20996957583]

約数ペア:

[(1, 20996957583), (3, 6998985861), (7, 2999565369), (9, 2332995287), (21, 999855123), (53, 396169011), (59, 355880637), (63, 333285041), (159, 132056337), (177, 118626879), (371, 56595573), (413, 50840091), (477, 44018779), (531, 39542293), (1113, 18865191), (1239, 16946697), (2011, 10441053), (2809, 7474887), (3127, 6714729), (3339, 6288397), (3717, 5648899), (6033, 3480351), (8427, 2491629), (9381, 2238243), (14077, 1491579), (18099, 1160117), (19663, 1067841), (21889, 959247), (25281, 830543), (28143, 746081), (42231, 497193), (58989, 355947), (65667, 319749), (106583, 197001), (118649, 176967), (126693, 165731)]