128392775

素因数分解:

$5^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{251}}^1$

素因数の和:384

約数の個数: 48

約数和(自身を含む): 189987840

約数和(自身を除く): 61595065

約数列:

[1, 5, 7, 25, 35, 37, 79, 175, 185, 251, 259, 395, 553, 925, 1255, 1295, 1757, 1975, 2765, 2923, 6275, 6475, 8785, 9287, 13825, 14615, 19829, 20461, 43925, 46435, 65009, 73075, 99145, 102305, 138803, 232175, 325045, 495725, 511525, 694015, 733673, 1625225, 3470075, 3668365, 5135711, 18341825, 25678555, 128392775]

約数ペア:

[(1, 128392775), (5, 25678555), (7, 18341825), (25, 5135711), (35, 3668365), (37, 3470075), (79, 1625225), (175, 733673), (185, 694015), (251, 511525), (259, 495725), (395, 325045), (553, 232175), (925, 138803), (1255, 102305), (1295, 99145), (1757, 73075), (1975, 65009), (2765, 46435), (2923, 43925), (6275, 20461), (6475, 19829), (8785, 14615), (9287, 13825)]