20159769

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{307}}^1$

素因数の和:429

約数の個数: 32

約数和(自身を含む): 31933440

約数和(自身を除く): 11773671

約数列:

[1, 3, 7, 21, 53, 59, 159, 177, 307, 371, 413, 921, 1113, 1239, 2149, 3127, 6447, 9381, 16271, 18113, 21889, 48813, 54339, 65667, 113897, 126791, 341691, 380373, 959989, 2879967, 6719923, 20159769]

約数ペア:

[(1, 20159769), (3, 6719923), (7, 2879967), (21, 959989), (53, 380373), (59, 341691), (159, 126791), (177, 113897), (307, 65667), (371, 54339), (413, 48813), (921, 21889), (1113, 18113), (1239, 16271), (2149, 9381), (3127, 6447)]