19844721

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{113}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 33196800

約数和(自身を除く): 13352079

約数列:

[1, 3, 9, 13, 19, 39, 57, 79, 113, 117, 171, 237, 247, 339, 711, 741, 1017, 1027, 1469, 1501, 2147, 2223, 3081, 4407, 4503, 6441, 8927, 9243, 13221, 13509, 19323, 19513, 26781, 27911, 58539, 80343, 83733, 116051, 169613, 175617, 251199, 348153, 508839, 1044459, 1526517, 2204969, 6614907, 19844721]

約数ペア:

[(1, 19844721), (3, 6614907), (9, 2204969), (13, 1526517), (19, 1044459), (39, 508839), (57, 348153), (79, 251199), (113, 175617), (117, 169613), (171, 116051), (237, 83733), (247, 80343), (339, 58539), (711, 27911), (741, 26781), (1017, 19513), (1027, 19323), (1469, 13509), (1501, 13221), (2147, 9243), (2223, 8927), (3081, 6441), (4407, 4503)]