28077231

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{5413}}^1$

素因数の和:5455

約数の個数: 32

約数和(自身を含む): 48509440

約数和(自身を除く): 20432209

約数列:

[1, 3, 7, 13, 19, 21, 39, 57, 91, 133, 247, 273, 399, 741, 1729, 5187, 5413, 16239, 37891, 70369, 102847, 113673, 211107, 308541, 492583, 719929, 1337011, 1477749, 2159787, 4011033, 9359077, 28077231]

約数ペア:

[(1, 28077231), (3, 9359077), (7, 4011033), (13, 2159787), (19, 1477749), (21, 1337011), (39, 719929), (57, 492583), (91, 308541), (133, 211107), (247, 113673), (273, 102847), (399, 70369), (741, 37891), (1729, 16239), (5187, 5413)]