138245720

素因数分解:

$2^3\times 5^1\times {\mathrm{311}}^1\times {\mathrm{11113}}^1$

素因数の和:11435

約数の個数: 32

約数和(自身を含む): 312081120

約数和(自身を除く): 173835400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 311, 622, 1244, 1555, 2488, 3110, 6220, 11113, 12440, 22226, 44452, 55565, 88904, 111130, 222260, 444520, 3456143, 6912286, 13824572, 17280715, 27649144, 34561430, 69122860, 138245720]

約数ペア:

[(1, 138245720), (2, 69122860), (4, 34561430), (5, 27649144), (8, 17280715), (10, 13824572), (20, 6912286), (40, 3456143), (311, 444520), (622, 222260), (1244, 111130), (1555, 88904), (2488, 55565), (3110, 44452), (6220, 22226), (11113, 12440)]