20998002

素因数分解:

$2^1\times 3^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{3919}}^1$

素因数の和:3990

約数の個数: 32

約数和(自身を含む): 45158400

約数和(自身を除く): 24160398

約数列:

[1, 2, 3, 6, 19, 38, 47, 57, 94, 114, 141, 282, 893, 1786, 2679, 3919, 5358, 7838, 11757, 23514, 74461, 148922, 184193, 223383, 368386, 446766, 552579, 1105158, 3499667, 6999334, 10499001, 20998002]

約数ペア:

[(1, 20998002), (2, 10499001), (3, 6999334), (6, 3499667), (19, 1105158), (38, 552579), (47, 446766), (57, 368386), (94, 223383), (114, 184193), (141, 148922), (282, 74461), (893, 23514), (1786, 11757), (2679, 7838), (3919, 5358)]