320480888

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{440221}}^1$

素因数の和:440247

約数の個数: 32

約数和(自身を含む): 739572960

約数和(自身を除く): 419092072

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728, 440221, 880442, 1760884, 3081547, 3521768, 5722873, 6163094, 11445746, 12326188, 22891492, 24652376, 40060111, 45782984, 80120222, 160240444, 320480888]

約数ペア:

[(1, 320480888), (2, 160240444), (4, 80120222), (7, 45782984), (8, 40060111), (13, 24652376), (14, 22891492), (26, 12326188), (28, 11445746), (52, 6163094), (56, 5722873), (91, 3521768), (104, 3081547), (182, 1760884), (364, 880442), (728, 440221)]