28405923

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{1553}}^1$

素因数の和:1643

約数の個数: 32

約数和(自身を含む): 47341056

約数和(自身を除く): 18935133

約数列:

[1, 3, 7, 13, 21, 39, 67, 91, 201, 273, 469, 871, 1407, 1553, 2613, 4659, 6097, 10871, 18291, 20189, 32613, 60567, 104051, 141323, 312153, 423969, 728357, 1352663, 2185071, 4057989, 9468641, 28405923]

約数ペア:

[(1, 28405923), (3, 9468641), (7, 4057989), (13, 2185071), (21, 1352663), (39, 728357), (67, 423969), (91, 312153), (201, 141323), (273, 104051), (469, 60567), (871, 32613), (1407, 20189), (1553, 18291), (2613, 10871), (4659, 6097)]